Health Alerts, Advisories & Updates

What are Health Alerts, Advisories and Updates?

CDC ---->

State Health Dept.s ---->

Local Health Dept.s ---->

Madera County Health Providers

Health alerts, advisories & updates are a way to send urgent health information from the CDC to health organizations:

The CDC sends a HAN (Health Alert Network) advisory to the states and interested partners (hospitals, emergency response agencies, health providers)
California will send the information through CHAN (California Health Alert Network) to local Health Departments and interested partners, noting California-specific information
Local Health Departments (like Madera County Dept. of Public Health) decide which issues are relevant to Madera County, note specific Madera County issues and can send a local health alert to area providers, pharmacies and funeral homes, depending on the topic.

Health Alerts, Advisories & Updates

2025
Date	Health Communication Topic	Type
2025
9/15/25	First Human Case of West Nile Virus in Madera County	Advisory
9/9/25	Immunization Guidance for Healthcare Personnel (HCP)	Advisory
5/6/25	Surge in Mycoplasma pneumoniae (“Walking Pneumonia”) Guidance on Diagnosis, Treatment, and Infection Control
3/11/25	Confirmed Measles Case in Fresno County	Alert
2024
1/23/24	Pertussis Activity is Increasing in Madera County	Advisory
9/3/24	Joint Health Advisory- Avian Influenza Confirmed in Three California Dairy Herds –Screening Guidelines for Providers
10/25/24	Avian Influenza Update	Advisory
12/2/24	H5N1 Avian Influenza Webpage	Update
2023
1/4/23	Patients Treated at Fresno and Madera County Hospitals - Repatriation for Transferred Patients and Skilled Nursing Facility (SNF) Placements	Advisory
6/20/23	Measles Activity in the San Joaquin Valley	Advisory
12/4/23	Assess and Refer Policy and Patient Referrals	Advisory

2022
11/23/22	Pediatric Surge Planning	Advisory
10/07/22	First Monkeypox (MPX) case in Madera County	Update
09/19/22	Acute Flaccid Myelitis Associated with Enteroviruses	Advisory
08/31/22	1st Human West Nile Virus case in Madera County	Advisory
06/01/22	Monkeypox Activity in US & California	Advisory
05/18/22	Seasonal Influenza Activity Increasing in Madera County	Advisory
05/13/22	Test-to-Treat Program in Madera County	Update
04/26/22	Recommendations for Adenovirus Testing and Reporting of Children with Acute Hepatitis of Unknown Etiology	Advisory
02/24/22	Local Availability of Paxlovid for New COVID 19 Cases	Update

2021
12/29/21	Oral Antivirals for COVID-19 Available	Update
12/23/21	Omicron Cases Increasing Rapidly in California	Update
11/22/21	Expand Syphilis & HIV Testing for Pregnant Women	Advisory
09/29/21	Influenza Respiratory Syncytial Virus Activity	Advisory
09/29/21	COVID-19 Vaccination for Pregnant People recommended to prevent serious outcomes	Advisory
09/15/21	Monoclonal Antibody Treatment for COVID-19 Patients Expanded at MCH	Update
07/21/21	Monkey Pox	Alert
07/09/21	Title 17 Reporting COVID Variants, Sequencing Submission to Lab	Update
07/06/21	Recall of LeadCare Blood Lead Tests Due to Risk of Falsely Low Results	Advisory
05/28/21	Bamlanivimab plus Etesevimab No Longer Recommended COVID-19	Alert
05/28/21	Myocarditis and Pericarditis after Receipt of mRNA COVID-19 Vaccines Among Adolescents and Young Adults	Advisory
03/17/21	Eligibility Expanded	Update
2020
01/30/20	Pesticide Illness Reporting	Update

What is the difference between an Alert, Advisory & Update?

Health Communications are issued with different urgency levels:

Health Alert: Conveys the highest level of importance; warrants immediate action or attention
Health Advisory: Provides important information for a specific incident or situation; may not require immediate action
Health Update: Provides updated information regarding an incident or situation; unlikely to require immediate action
Health Information: Provides general health information which is not considered to be of emergent nature

Health Alerts, Advisories and Updates are periodically issued by Madera County Department of Public Health to advise Madera County Medical Providers and other groups of emerging medical issues affecting Madera County.

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updated 9/15/25

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What are Health Alerts, Advisories and Updates?

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