office of communications

California Health Alert Network (CAHAN)

The California Health Alert Network (CAHAN) is the official public health alerting and notification program for California, CAHAN is designed for emergency preparedness information sharing, distribution of pertinent public health related events and alerting materials, dissemination of treatment and prevention guidelines, coordinated disease investigation efforts, preparedness planning, and other initiatives that strengthen state and local preparedness. The priority health communication distribution through the health communication system is ranked into four different levels using the below levels of communications based on the noted definitions.

Enrollment is limited to administration and select staff with emergency preparedness roles in State Agencies, Local Health Jurisdictions and California Department of Public Health (CDPH) licensed Health Care Facilities.

Please visit this link for more information and details on enrolling: CAHAN Alert System - FAQs (everbridge.net)

Level of communication types:

Alert: Conveys the highest level of importance; warrants immediate action or attention.

Advisory: Provides important information for a specific incident or situation; may not require immediate action.

Update: Provides updated information regarding an incident or situation; unlikely to require immediate action along with general information that is not considered to be of an emergent nature.

Other Health Advisories:

All Facilities Letters - An All Facilities Letter (AFL) is a communication from the Center for Health Care Quality (CHCQ), Licensing and Certification (L&C) Program to health facilities that are licensed or certified by L&C. The information contained in the AFL may include changes in requirements in healthcare, enforcement, new technologies, scope of practice, or general information that affects the health facility.
Healthcare-Associated Infections Program - CDPH health communications sent through the system by the HAI Program. .
Centers for Disease Control (CDC) - National Health Alert Network (HAN) is CDC’s primary method of sharing cleared information about urgent public health incidents with public information officers; federal, state, territorial, tribal, and local public health practitioners; clinicians; and public health laboratories
Policy Alerts - CDPH Policy alerts include the latest guidance and policy updates from CDPH, which may include updates to the California state public health officer orders, public health mandates related to COVID-19, Mpox, and other topics and resources. Fill out the CDPH Policy Alert Registration form to sign up and receive these updates weekly.

2020-2022
2023

Increased Respiratory Syncytial Virus (RSV) Activity in Parts of the Southeastern United States: New Prevention Tools Available to Protect Patients
CDC/Health Advisory– September 5, 2023 - The Centers for Disease Control and Prevention (CDC) is issuing this Health Alert Network (HAN) Health Advisory to notify clinicians and caregivers about increases in respiratory syncytial virus (RSV) activity across some parts of the Southeastern United States in recent weeks, suggesting a continued shift toward seasonal RSV trends observed prior to the COVID-19 pandemic. Historically, such regional increases have predicted the beginning of RSV season nationally, with increased RSV activity spreading north and west over the following 2–3 months. RSV can cause severe disease in infants, young children, and older adults.
Severe Vibrio vulnificus Infections in the United States Associated with Warming Coastal Waters
CDC/Health Advisory– September 1, 2023 - The Centers for Disease Control and Prevention (CDC) is issuing this Health Alert Network (HAN) Health Advisory to notify healthcare providers, laboratories and public health departments about recent reports of fatal Vibrio vulnificus (V. vulnificus) infections including wound and foodborne infections. Healthcare professionals are urged to consider V. vulnificus as a possible cause of infected wounds that were exposed to coastal waters, particularly near the Gulf of Mexico or East Coast, and during periods with warmer coastal sea surface temperatures. Healthcare providers in California should report cases to their local public health department.
Important Updates on Locally Acquired Malaria Cases Identified in Florida, Texas and Maryland
CDC/Health Update– August 28, 2023 - The Centers for Disease Control and Prevention (CDC) is issuing this Health Alert Network (HAN) Health Update to share new information with clinicians, public health authorities, and the public about locally acquired malaria cases identified in the United States. On August 18, 2023, a single case of locally acquired malaria was reported in Maryland in the National Capital Region. This case was caused by the Plasmodium falciparum (P. falciparum) species and is unrelated to the cases involving local transmission of Plasmodium vivax (P. vivax) malaria in Florida and Texas described in the HAN Health Advisory 494 issued on June 26, 2023. As an update to that report, to date, Florida has identified seven cases and Texas has identified one case of locally acquired P. vivax malaria, but there have been no reports of local transmission of malaria in Florida or Texas since mid-July 2023.
Outbreak of Aeromonas Skin Infections Associated with an Adventure Race, Sonoma, California
CDPH/Health Advisory – August 28, 2023 - The Sonoma Department of Health Services (SDHS) and California Department of Public Health (CDPH) are investigating an Aeromonas outbreak linked to Tough Mudder adventure race events at the Sonoma Raceway on August 19 and 20, 2023. Numerous race participants have experienced skin and soft tissue infections (SSTIs, most frequently described as a pustular rash), along with other symptoms such as fever and headache. Healthcare providers should ask patients presenting with SSTIs about whether they participated in a Tough Mudder race at the Sonoma Raceway and should report cases to their local public health department.
Listeria Associated with Soft Serve Ice Cream distributed to Long-term Care Facilities
CDPH/Health Advisory – August 15, 2023 - In response to the U.S Food and Safety Administration recall announcement, the Centers for Disease Control and Prevention (CDC) and the California Department of Public Health (CDPH) are encouraging healthcare providers to remain vigilant for possible Listeria infections. On August 9, Real Kosher Ice Cream recalled all flavors of their “Soft Serve On The Go” ice cream cups. Recalled ice cream cups were distributed nationwide to multiple long-term care facilities. There has been one sick person in this outbreak that was served this ice cream cup while residing in a long-term care facility. California long term care facilities and healthcare providers should contact their local health department immediately if they identify a case in a resident of a long-term care facility or if there are multiple suspected cases.
Global Epidemic Comes to California: Silicosis in Countertop Workers

CDPH/Health Advisory – June 25, 2023 - Since 2010, more than 1,000 cases of silicosis in workers who fabricate countertops have been reported worldwide. Workers in this industry can inhale crystalline silica dust as they cut and finish countertops, which places them at risk for silicosis, a severe, incurable lung disease. In California, more than 70 cases of silicosis and at least 10 deaths have been identified among countertop fabrication workers. Workers with silicosis are characterized as young (median age of 45), immigrant men; many have experienced delayed diagnoses and accelerated disease course. California health care providers should ask patients about their occupation and suspect silicosis in countertop workers. To report cases to CDPH, call 1-800-970-6680 or email silicosis@cdph.ca.gov.
- Wildfire Smoke Exposure Poses Threat to At-Risk Populations
  CDC/Health Advisory – June 30, 2023 – The Centers for Disease Control and Prevention (CDC) is reminding healthcare professionals seeing patients affected by wildfire smoke to be alert to the possible adverse effects of smoke exposure, particularly among individuals at higher risk of severe outcomes. The acute signs and symptoms of smoke exposure can include headache, eye and mucous membrane irritation, dyspnea (trouble breathing), cough, wheezing, chest pain, palpitations and fatigue. Wildfire smoke exposure may exacerbate respiratory, metabolic, and cardiovascular chronic conditions like asthma, chronic obstructive pulmonary disease (COPD) and congestive heart failure.
Locally Acquired Malaria Cases Idenified in the United States

CDC/Health Advisory – June 26, 2023 – The Centers for Disease Control and Prevention (CDC) is issuing this Health Alert Network (HAN) Health Advisory to share information and notify clinicians, public health authorities, and the public about: 1. Identification of locally acquired malaria cases (P. vivax) in two U.S. states (Florida [4] and Texas [1]) within the last 2 months. 2. Concern for a potential rise in imported malaria cases associated with increased international travel in summer 2023, and 3. Need to plan for rapid access to IV artesunate, which is the first-line treatment for severe malaria in the United States.

Guidance on Measles During Summer Travel Season

CDC/Health Advisory – June 22, 2023 – As the summer travel season begins, the Centers for Disease Control and Prevention (CDC) is issuing this Health Alert Network (HAN) Health Advisory to remind clinicians and public health officials to provide guidance for measles prevention to international travelers and to be on alert for cases of measles. The United States has seen an increase in measles cases during the first 5 months of 2023, with 16 reported cases compared with 3 in 2022 during the same period. Most of these cases were among children who had not received measles-mumps-rubella (MMR) vaccine. To prevent measles infection and spread from importation, all U.S. residents should be up to date on their MMR vaccinations, especially prior to international travel regardless of the destination.
Request to Submit Specimens from Patients Receiving Intensive Care for Influenza A to Public Health Laboratories

CDPH/Health Update – June 21, 2023 – In response to the global outbreak in birds of highly pathogenic avian influenza (HPAI) A(H5N1), the Centers for Disease Control and Prevention (CDC) and the California Department of Public Health (CDPH) are encouraging providers to remain vigilant and to test for influenza among persons with severe respiratory illnesses or who are exposed to poultry and swine. California healthcare providers are requested to submit influenza positive A samples in several specific clinical scenarios described in the Health Update to local health department laboratories for influenzas A subtyping.
Xylazine in Illicit Fentanyl in the United States

CDPH/Health Advisory - June 15, 2023 - On April 12, the White House officially designated fentanyl adulterated or associated with xylazine as an emerging threat to the U.S. Xylazine is a veterinary sedative with no approval for human use and is increasingly present in overdose deaths in the United States, compounding the overdose crisis. California healthcare providers and community-based organizations serving people who use drugs should be vigilant for the presence of xylazine.
- Important Updates on the Outbreak of Fungal Menigitis in U.S. Patients Who Underwent Surgical Procedures under Epidural Anesthesia in Matamoros, Mexico
  
  CDC/Health Update - June 2, 2023 - The Centers for Disease Control and Prevention (CDC) is issuing this Health Alert Network (HAN) Health Update to supplement the CDC HAN Health Advisory issued on May 17, 2023. This Health Update provids updates on the status of the ongoing fungal meningitis outbreak and highlights interim recommendations for diagnosis and treatment. California healthcare providers should immediately report suspected fungal meningitis cases, including those possibly related to this outbreak, to their local health department and the CDPH Healthcare-Associated Infections (HAI) Program at HAIProgram@cdph.ca.gov.
Bicillin® L-A (Benzathine Penicillin G) Shortage

CDPH/Health Advisory - June 1, 2023 - The Centers for Disease Control and Prevention (CDC) and the U.S. Food and Drug Administration (FDA) have announced and listed long-acting penicillin G benzathine injectable suspension products (Bicillin® L-A) on their respective drug shortage webpages, estimating a recovery timeframe in Q4 2023. This is of considerable concern to California as the state continues to see significant increases in syphilis, including syphilis in pregnant persons and congenital syphilis in infants. CDPH recommends prioritizing Bicillin® L-A for pregnant people with syphilis infection or exposure, infants with congenital syphilis infection or exposure, and patients with contraindications to doxycycline. Health care providers can monitor the Bicillin® L-A drug shortages on the FDA Drug Shortages webpage.
California Healthcare Providers Preventing a Resurgence of Mpox Cases in California
CDPH/Health Advisory - June 1, 2023 - While the rate of mpox has declined precipitously since its peak in August 2022, mpox transmission has continued in California, and other states have recently reported a resurgence of mpox cases. On May 30, 2023 CDPH sent a letter to Californian health care providers as a call to action to remain vigilant in mpox prevention, recognition, and testing, especially during the upcoming 2023 spring and summer season as people gather for festivals and events, including LGBTQ Pride Month in June. Information on how to diagnose, test for, and vaccinate mpox is included. The letter is available online. Please contact CDPH STD Control Branch at STDCB@cdph.ca.gov with any questions.
- Outbreak of Suspected Fungal Meningitis in U.S. Patients who Underwent Surgical Procedures under Epidural Anesthesia in Matamoros, Mexico
  
  CDC/Health Advisory - May 17, 2023 - The Centers for Disease Control and Prevention (CDC) is issuing this Health Alert Network (HAN) Health Advisory. California healthcare providers should immediately report suspected fungal meningitis cases, including those possibly related to this outbreak, to their local healthdepartment and the CDPH Healthcare-Associated Infections (HAI) Program at HAIProgram@cdph.ca.gov.
Potential Risk for New Mpox Cases
CDC/Health Update - May 15, 2023 - The Centers for Disease Control and Prevention (CDC) is issuing this Health Alert Network (HAN) Health Update to inform clinicians and public health agencies about the potential for new clusters or outbreaks of mpox cases and to provide resources on clinical evaluation, treatment, vaccination, and testing.
Marburg Virus Disease Outbreaks in Equatorial Guinea and Tanzania
CDC/Health Advisory - April 6, 2023 - The Centers for Disease Control and Prevention (CDC) is issuing this Health Alert Network (HAN) Health Advisory to notify clinicians and public health departments in the United States about two confirmed outbreaks of Marburg virus disease (MVD)—one in Equatorial Guinea and one in Tanzania. This Health Advisory provides information about these outbreaks to increase awareness of the risk of imported cases in the United States.
Updates on Identification, Laboratory Testing, Management and Treatment, and Vaccination for Mpox Virus Infection in California
CDPH/Health Advisory - April 4, 2023 - The California Deparment of Public Health (CDPH) are alerting healthcare providers of the need to identify and test, including testing for HIV and STDs in people with mpox. This advisory includes information on management, treatment, vaccination and updates to information and recommendations about severe mpox, including recent CDC interim clinical treatment considerations for severe mpox.
Elevated Norovirus Activity in California
CDPH/Health Advisory - March 28, 2023 - The California Deparment of Public Health (CDPH) are alerting healthcare providers regarding Norovirus activity. Since February 1, 2023, at least 25 outbreaks of norovirus in California have been confirmed by laboratory testing, likely reflecting hundreds of illnesses in the state. CDPH reminds healthcare providers to report all outbreaks of acute gastroenteritis, including suspected outbreaks of norovirus, to their local health departments.
Measles Exposure at a Large Gathering in Kentucky, February 2023 and Global Measles Outbreaks
CDC/Health Advisory - March 3, 2023 - The Centers for Disease Control and Prevention (CDC) is issuing this Health Alert Network (HAN) Health Advisory to notify clinicians and public health officials about a confirmed measles case at a large gathering. This Health Advisory also highlights other recent large global measles outbreaks and associated U.S. importations, and the importance of early recognition, diagnosis, and appropriate treatment. CDC recommends that clinicians be on alert for cases of measles that meet the case definition.
Increased Chikungunya Virus Activity in Paraguay and Associated Risk to Travelers
CDC/Health Advisory - March 2, 2023 - The Centers for Disease Control and Prevention (CDC) is issuing this Health Alert Network (HAN) Health Advisory to notify clinicians and public health authorities of an increase in the number of cases of chikungunya reported in Paraguay. The Health Advisory provides information on the current status of the chikungunya outbreak in Paraguay and advises on evaluating and testing travelers returning from Paraguay with signs and symptoms consistent with chikungunya virus infection.
Increase in Extensively Drug-Resistant Shigellosis in the United States
CDC/Health Advisory - February 24, 2023 - The Centers for Disease Control and Prevention (CDC) is issuing this Health Alert Network (HAN) Health Advisory about the increase in extensively drug-resistant (XDR) Shigella infections (shigellosis) reported through national surveillance systems. CDC asks healthcare professionals to be vigilant about suspecting and reporting cases of XDR Shigella infection to their local or state health department and educating patients and communities at increased risk about prevention and transmission.
Emergence of Candida auris in Healthcare Facilities in Northern California

CDPH/Health Advisory - February 8, 2023 - The California Department of Public Health (CDPH) and local public health partners are alerting healthcare providers of the emergence of epidemiologically-linked Candida auris (C. auris) cases associated with acute care hospital (ACH), skilled nursing facility (SNF), and outpatient settings in Sacramento and Stanislaus counties since September 2022.
Outbreak of Extensively Drug-resistant Pseudomonas aeruginosa Associated with Artificial Tears

CDC/Health Advisory - February 1, 2023 - The Centers for Disease Control and Prevention (CDC) is issuing this Health Alert Network (HAN) Health Advisory about infections with an extensively drug-resistant strain of Verona Integron-mediated Metallo-β-lactamase (VIM) and Guiana-Extended Spectrum-β-Lactamase (GES)-producing carbapenem-resistant Pseudomonas aeruginosa (VIM-GES-CRPA) in 12 states.

Increase in Pediatric Invasive Group A Streptococcal Infections

CDC/Health Advisory - December 22, 2022 - The Centers for Disease Control and Prevention (CDC) is issuing this Health Alert Network (HAN) Health Advisory to notify clinicians and public health authorities of a recent increase in pediatric invasive group A streptococcal (iGAS) infections, the increased seasonal risk of iGAS disease for all age groups, and the importance of early recognition, diagnosis, and appropriate treatment of these diseases in children and adults.
Important Updates on COVID-19 Therapeutics for Treatment and Prevention
CDC/Health Update - December 20, 2022 - This Health Alert Network (HAN) Health Update provides health care professionals, public health officials, and the public with guidance on improving use of therapeutics for treatment of COVID-19 and strategies to prevent serious outcomes of COVID-19.
Interim Guidance for Clinicians to Prioritize Antiviral Treatment of Influenza in the Setting of Reduced Availability of Oseltamivir

CDC/Health Advisory - December 14, 2022 - The Centers for Disease Control and Prevention (CDC) is issuing this Health Alert Network (HAN) Health Advisory to provide clinicians and public health officials with guidance for prioritizing oseltamivir for treatment and information on other influenza antivirals that are recommended for treating influenza in areas where oseltamivir is temporarily unavailable.
Evaluating and Managing Travelers Returning from Ebola Outbreak Areas with Infectious Disease Symptoms

CDPH/Health Advisory - December 13, 2022 - This alert provides updated information for California healthcare providers in the evaluation and management of patients suspected of having Ebola virus disease (EVD).
Updated Reminder to Lower Barriers to Prescribing COVID-19 Therapeutics to Mitigate Impact of COVID-19
CDPH/Health Advisory - December 2, 2022 - Once an individual is diagnosed with COVID-19, early treatment with COVID-19-specific agents is the only existing strategy to markedly decrease risk of serious illness.
Update on Managing Monkeypox in Patients Receiving Therapeutics
CDC/Health Alert - November 17, 2022 - Monkeypox cases have declined since mid-August 2022 in the United States; however, new cases—including clinically severe cases—continue to occur.
Early Respiratory Syncytial Virus and Seasonal Influenza Activity

CDPH/Health Alert - November 12, 2022 - As RSV and other respiratory virus activity continues to evolve and new evidence emerges, California Department of Public Health (CDPH) will collaborate with local health departments to assess and provide additional updates as they become available.
Call for Cases: Multistate Cluster of Verona Integron-mediated Metallo-ß-lactamase (VIM)-producing Carbapenem-resistant Pseudomonas aeruginosa
CDPH/Health Alert - November 8, 2022 - On October 27, 2022, the Centers for Disease Control and Prevention (CDC) issued a call for cases through the Epidemic Information Exchange (Epi-X), for a multistate cluster of VIM-producing carbapenem-resistant Pseudomonas aeruginosa (VIM-CRPA) under investigation with state and local public health departments.
Update on Ebola Virus Disease (Sudan ebolavirus) Outbreak in Central Uganda

CDC/Health Alert - November 7, 2022 - The Centers for Disease Control and Prevention (CDC) is issuing this Health Alert Network (HAN) Health Update as a follow-up to a HAN Health Advisory (Outbreak of Ebola virus disease (Sudan ebolavirus) in Central Uganda) issued on October 6, 2022.
Increased Respiratory Virus Activity, Especially Among Children, Early in the 2022-2023 Fall and Winter

CDC/Health Alert - November 4, 2022 - The Centers for Disease Control and Prevention (CDC) is issuing this Health Alert Network (HAN) Health Advisory about early, elevated respiratory disease incidence caused by multiple viruses occurring especially among children and placing strain on healthcare systems.
Outbreaks of Nontuberculous Mycobacteria Infections Highlight Importance of Maintaining and Monitoring Dental Waterlines

CDC/Health Alert - October 31, 2022 -The Centers for Disease Control and Prevention (CDC) is issuing this Health Alert Network (HAN) Health Advisory to emphasize the importance of following existing recommendations for maintaining and monitoring dental waterlines.
Outbreak of Ebola Virus Disease Due to Sudan Virus in Central Uganda
CDPH/Health Alert - October 7, 2022 - The California Department of Public Health (CDPH), in collaboration with the U.S. Centers for Disease Control and Prevention (CDC), has been closely monitoring an outbreak of Ebola virus disease (EVD) due to Sudan virus (species Sudan ebolavirus) in Central Uganda.
Public Health Officer Order Updates Effective October 4th, 2022, regarding mandatory reporting of COVID-19 results by HCPs
CDPH/Healthcare Provider Advisory - October 6, 2022 - This Health Advisory outlines that health care providers (HCP) are required to report cases of Coronavirus disease 2019 (COVID-19) pursuant to provisions of title 17, California Code of Regulations sections 2500.
Outbreak of Ebola virus disease (Sudan ebolavirus) in Central Uganda
CDC/Health Alert - October 6, 2022 - The Centers for Disease Control and Prevention (CDC) is issuing this Health Alert Network (HAN) Health Advisory about a recently confirmed outbreak of Ebola virus disease (EVD) in Uganda caused by Sudan virus (species Sudan ebolavirus) to summarize CDC’s recommendations for U.S. public health departments and clinicians, case identification and testing, and clinical laboratory biosafety considerations.
Guidance for Safe Specimen Collection From Monkeypox (MPX) Lesions: Reminder to NOT De-roof Lesions and NOT Use Sharps

CDPH/Healthcare Provider Advisory - October 5, 2022 - This Advisory reminds California healthcare providers of Centers for Disease Control and Prevention (CDC) recommendations to reduce risk of MPX virus transmission to healthcare personnel (HCP) during collection of specimens from lesions for laboratory diagnosis of MPX.
Early Respiratory Syncytial Virus Activity and Use of Palivizumab
CDPH/Health Advisory - October 3, 2022 - Respiratory syncytial virus (RSV) is the most common cause of bronchiolitis and pneumonia in infants and a cause of severe disease in adults older than age 65 years.
Hurricanes Fiona and Ian—Clinical Guidance for Carbon Monoxide (CO) Poisoning
CDC/Health Alert - October 3, 2022 - The Centers for Disease Control and Prevention (CDC) is reminding healthcare professionals seeing patients from areas affected by Hurricanes Fiona or Ian to maintain a high index of suspicion for carbon monoxide (CO) poisoning.
Severe Manifestations of Monkeypox among People who are Immunocompromised Due to HIV or Other Conditions (PDF)
CDC/Health Alert - September 29, 2022 - Since May 2022, more than 25,000 monkeypox cases have been identified in the United States.
Healthcare Provider Health Advisory: Public Health Officer Order Updates Effective September 17th, 2022, regarding testing requirements for workers in both congregate and high-risk settings
CDPH/Health Advisory - September 28, 2022 - The California Department of Public Health (CDPH) has updated several state public health officer orders to align with the most current Centers for Disease Control and Prevention (CDC) recommendations that screening testing is no longer recommended in general community settings.
State Public Health Leaders Warn School Leaders of New Brightly Colored "Rainbow Fentanyl" Trend
CDPH/Health Alert - September 22, 2022 - Fentanyl (an extremely potent and dangerous synthetic opioid) continues to be a major contributor to drug overdoses in California, including among youth.
Vigilance for Acute Flaccid Myelitis (AFM) Warranted - Recent Detections of Enterovirus D68 and Poliovirus in the United States

CDPH Health Advisory - September 15, 2022 - The California Department of Public Health (CDPH) requests healthcare providers and local health departments to be vigilant for acute flaccid myelitis (AFM), which typically presents with sudden limb weakness in children that can lead to permanent paralysis.
Healthcare Provider Health Advisory: Updated Guidance on Laboratory Testing of Pediatric Patients for MPX Virus Infection in California

CDPH Health Advisory - September 9, 2022 - This alert provides updated information for California healthcare providers with regard to testing of pediatric patients for MPX.
Severe Respiratory Illnesses Associated with Rhinoviruses and/or Enteroviruses Including EV-D68 –Multistate, 2022

CDC/Health Alert - September 9, 2022 - Healthcare providers and hospitals in several regions of the United States notified the Centers for Disease Control and Prevention (CDC) during August 2022 about increases in pediatric hospitalizations in patients with severe respiratory illness who also tested positive for rhinovirus (RV) and/or enterovirus (EV).
Title 17 Revisions, Section 2500 of the California Code of Regulations

CDPH/Health Alert - September 6, 2022 - The California Department of Public Health, in consultation with the California Conference of Local Health Officers, recently updated Title 17 section 2500 of the California Code of Regulations.
Candida auris in Nevada State Healthcare Facilities September 2022

CDPH/Health Advisory - September 6, 2022 - CDPH and local public health partners are alerting healthcare providers of the continued identification of Candida auris (C. auris) cases in Southern California, and the emergence of C. auris cases linked to hospitals and skilled nursing facilities (SNF) in Southern Nevada since August 2021.
Healthcare Provider Health Advisory: Updates on Laboratory Testing and Treatment for Monkeypox (MPX) Virus Infection in California
CDPH/Health Advisory - August 31, 2022 - This alert provides updated information for California healthcare providers for testing of suspected MPX cases and treatment of suspected, probable, and confirmed MPX cases at risk for severe outcomes.
Variant Influenza Virus Infections: Recommendations for Identification, Treatment, and Prevention for Summer and Fall 2022 (PDF)
CDC/Health Alert - August 30, 2022 - The Centers for Disease Control and Prevention (CDC) is issuing this Health Alert Network (HAN) Health Advisory to provide updates on recent variant1 influenza virus infections and summarize CDC’s recommendations for identification, treatment, and prevention of variant influenza virus infection for the summer and fall of 2022.
Extreme Temperatures Notification - Phase II Excessive Heat Event
CDPH/Health Advisory - August 31, 2022 - The California Department of Public Health was notified by the California State Warning Center that California has now entered Phase II of the State Contingency Plan for Excessive Heat Emergencies.
Update for Clinicians on Monkeypox in People with HIV, Children and Adolescents, and People who are Pregnant or Breastfeeding

CDC/Health Alert - July 29, 2022 - The Centers for Disease Control and Prevention (CDC) and state and local public health partners are reporting 5,189 cases of Monkeypox virus infections in the United States across 47 states, Washington, D.C., and Puerto Rico.
Update for Clinicians on Testing and Treatment for Monkeypox
CDC/Health Alert - July 28, 2022 - The Centers for Disease Control and Prevention (CDC) and state and local public health partners are reporting 4,907 cases of monkeypox in the United States across 46 states, Washington, D.C., and Puerto Rico.
Melioidosis Locally Endemic in Areas of the Mississippi Gulf Coast after Burkholderia pseudomallei Isolated in Soil and Water and Linked to Two Cases – Mississippi, 2020 and 2022 (PDF)

CDC/Health Alert - July 27, 2022 - The Centers for Disease Control and Prevention (CDC) identified the bacterium Burkholderia pseudomallei (B. pseudomallei) for the first time in the environment in the continental United States.
Recent Reports of Human Parechovirus (PeV) in the United States—2022 (PDF)

CDC/Health Alert - July 12, 2022 - The Centers for Disease Control and Prevention (CDC) is issuing this Health Alert Network (HAN) Health Advisory to inform clinicians and public health departments that parechovirus (PeV) is currently circulating in the United States.
Healthcare Provider Health Advisory: Managing Monkeypox Virus Infection in California, Updated June 23, 2022
CDPH/Health Advisory - June 23, 2022 - The California Department of Public Health (CDPH) continues to work with local health departments (LHDs) and California healthcare providers on the ongoing monkeypox situation impacting the United States and other countries not usually endemic for monkeypox.
Updated Case-finding Guidance: Monkeypox Outbreak—United States, 2022

CDC/Health Alert - June 14, 2022 - This Health Alert Network (HAN) Health Update serves to alert clinicians to clinical presentations of monkeypox seen so far in the United States and to provide updated and expanded case definitions intended to encourage testing for monkeypox among persons presenting for care with relevant history, signs, and symptoms.
Health Update on Recurrence of COVID-19 Symptoms After Treatment with Paxlovid (nirmatrelvir/ritonavir)
CDPH/Health Advisory - June 7, 2022 - The California Department of Public Health is issuing this Health Alert to update public health departments, healthcare providers, and the public about the potential for “rebound” symptoms of COVID-19 after completion of a 5-day course of Paxlovid.
Recommendation for Meningococcal Vaccine (MenACWY) for Men who have Sex with Men (MSM)—Florida Meningococcal Outbreak (PDF)
CDPH/Health Advisory - June 6, 2022 - Since April 2022, in response to an ongoing outbreak of serogroup C invasive meningococcal disease (IMD) in Florida, CDC has encouraged gay, bisexual, and other men who have sex with men (MSM) to: Receive quadrivalent meningococcal conjugate vaccine (MenACWY) if they live in Florida and talk with their healthcare provider about getting MenACWY if traveling to Florida.
Healthcare Provider Monkeypox Health Advisory, May 27, 2022: Monkeypox Virus Infection in the United States and Other Non-endemic Countries
CDPH/Health Advisory - May 27, 2022 - The California Department of Public Health (CDPH) continues to work with local health departments (LHDs) and California healthcare providers on the ongoing domestic monkeypox situation.
Monkeypox Virus Infection in the United States and Other Non-endemic Countries- Enhancing Surveillance in California as of May 20, 2022

CDPH/Health Advisory - May 20, 2022 - The California Department of Public Health (CDPH) is issuing this advisory to supplement the information contained in the Health Alert issued by the U.S. Centers for Disease Control and Prevention(CDC) to provide additional guidance to California local health jurisdictions (LHJs) and health care providers.
Seasonal Influenza Activity is Increasing in California May 17, 2022

CDPH/Health Advisory - May 17, 2022 - CDPH is notifying health care providers that seasonal influenza activity is gradually increasing, with elevated activity in Central California.
CDPH Advises Parents and Caregivers Against Making or Feeding Homemade Infant Formula to Infants (PDF)

CDPH/Health Advisory - May 13, 2022 - The impacts of the ongoing pandemic and the recent 2022 Abbott recall of certain powdered infant formula has led to periodic location- and product-based shortages of major brands of infant formula.
Updated Recommendation for Adenovirus Testing and Reporting of Children with Acute Hepatitis of Unknow Eti- May 11, 2022 - The Centers for Disease Control and Prevention (CDC) is issuing this Health Alert Network (HAN) Health Update to provide clinicians and public health authorities with updated information about an epidemiologic investigation of pediatric cases of hepatitis of unknown etiology in the United States.
Individuals with Chronic Conditions in California Disproportionately Impacted by COVID-19

CDPH/Health Alert December 11, 2020 - The California Department of Public Health (CDPH) is issuing this health alert for healthcare providers, local health departments, and hospitals for individuals with chronic conditions.

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CAHAN

office of communications

California Health Alert Network (CAHAN)

Severe Vibrio vulnificus Infections in the United States Associated with Warming Coastal Waters

Important Updates on Locally Acquired Malaria Cases Identified in Florida, Texas and Maryland

Outbreak of Aeromonas Skin Infections Associated with an Adventure Race, Sonoma, California

Listeria Associated with Soft Serve Ice Cream distributed to Long-term Care Facilities

Global Epidemic Comes to California: Silicosis in Countertop Workers

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office of communications

California Health Alert Network (CAHAN)

​Outbreak of Aeromonas Skin Infections Associated with an Adventure Race, Sonoma, California​​

Listeria Associated with Soft Serve Ice Cream distributed to Long-term Care Facilities​

Outbreak of Aeromonas Skin Infections Associated with an Adventure Race, Sonoma, California

Listeria Associated with Soft Serve Ice Cream distributed to Long-term Care Facilities