The Alameda County Public Health Department sends out Health Alerts, Advisories, and Updates regarding communicable disease outbreaks, immunization updates, and other public health concerns to Alameda County clinicians and other partners. See recent releases below.

Sign up for
AC Alert

Subscribe today to AC Alert, Alameda County’s 24/7 notification system, to begin receiving emergency alerts.

Health Care Provider AC Alert Registration Form: Health Updates, Advisories, and Alerts, as well as other pertinent information, are sent out to healthcare providers and other relevant contacts in Alameda County through a Public Health-specific subscription in AC Alert. Healthcare providers can register to receive these communications.

Main AC Alert Registration Form: All Alameda County residents are encouraged to register themselves for AC Alert messages from several Alameda County agencies via other subscription options.


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

July 06, 2021


Multistate Investigation of Non-travel Associated Burkholderia pseudomallei Infections (Melioidosis)

On June 30, 2021, the Centers for Disease Control and Prevention (CDC) issued a health advisory to notify clinicians and caregivers that they, the Kansas Department of Health and Environment, the Texas Department of State Health Services, and the Minnesota Department of Health are investigating three cases of Burkholderia pseudomallei (melioidosis) infections. Symptoms of melioidosis are varied and nonspecific and may include pneumonia, abscess formation, and/or blood infections. Due to its nonspecific symptoms, melioidosis can initially be mistaken for other diseases such as tuberculosis, and proper treatment may be delayed.

June 10, 2021


Increased Interseasonal Respiratory Syncytial Virus (RSV) Activity in Parts of the Southern United States

On June 10th, the Centers for Disease Control and Prevention (CDC) issued a health advisory to notify clinicians and caregivers about increased interseasonal respiratory syncytial virus (RSV) activity across parts of the Southern United States. Due to this increased activity, CDC encourages broader testing for RSV among patients presenting with acute respiratory illness who test negative for SARS-CoV-2.

May 28, 2021


Myocarditis and Pericarditis after Receipt of mRNA COVID-19 Vaccines Among Adolescents and Young Adults

On May 28th, CDPH issued a Health Advisory about reported cases of myocarditis and pericarditis after receipt of mRNA COVID-19 vaccines among adolescents and young adults, which are being investigated by the CDC. COVID-19 immunization is still recommended for persons 12 years of age and older. All cases of myocarditis following receipt of COVID-19 vaccine, as well as other adverse events following vaccination, should be reported promptly to the CDC/FDA Vaccine Adverse Event Reporting System (VAERS)

May 25, 2021


Cases of Myocarditis/Pericarditis after Receipt of mRNA Vaccines

On May 17th, the CDC Vaccine Safety Technical (VaSt) Work Group released a statement on reports of myocarditis following mRNA vaccines. VaST concluded that there are relatively few reports of myocarditis to date and that these cases seem to occur:

  • predominantly in adolescents and young adults,
  • more often in males than females,
  • more often following dose 2 than dose 1, and
  • typically within 4 days after vaccination.

Please report cases of myocarditis or pericarditis after vaccination promptly to the U.S. Vaccine Adverse Events Reporting System (VAERS).

April 29, 2021


Detection and containment of Carbapenemase-producing Acinitobacter Baumanii

The purpose of this joint Health Advisory is to instruct clinicians in Alameda County to test and screen for Carbapenem-resistant Acinitobacter baumanii bacteria.

April 28, 2021


Revised Reporting Requirements for Suspect Variant SARS-CoV-2 Infections

The purpose of this Health Advisory is to inform clinicians in Alameda County about the changes in reporting for Variants of Concern, including:

(1) Definition of Vaccine Breakthrough Cases of Interest (VBCIs) and (2) Deletion of specific quarantine requirements for close contacts of persons with VOC infections.

This advisory was updated April 27, 2021.

April 21, 2021


Reporting cases of thrombosis with thrombocytopenia syndrome (TTS) after receipt of J&J vaccine

On April 21, 2021, the California Department of Public Health (CDPH) issued the following Health Advisory: Pause in administration of the Johnson & Johnson COVID-19 vaccine; Reporting of cases of thrombosis with thrombocytopenia syndrome (TTS) after receipt of Johnson & Johnson vaccine.

All cases of thrombosis with thrombocytopenia syndrome (TTS) following receipt of J &J COVID-19 vaccine, as well as other adverse events following vaccination, should be reported to the CDC/FDA Vaccine Adverse Event Reporting System (VAERS).

April 13, 2021


Cases of Cerebral Venous Sinus Thrombosis with Thrombocytopenia after Receipt of the Johnson & Johnson COVID-19 Vaccine

On April 13, 2021, the CDC issued the following alert about cases of cerebral venous sinus thrombosis with thrombocytopenia after receipt of the Johnson & Johnson COVID-19 vaccine.

Please see the full CDC Health Alert at the following link:

The California Department of Public Health (CDPH) issued a similar alert through the CAHAN (California Health Alert Network) Disease Notification.

February 22, 2021


Interim Quarantine Guidance for Vaccinated Health Care Personnel

CDC has recently released additional quarantine guidance for persons fully vaccinated against COVID-19.

The Alameda County Public Health Department (ACPHD) has updated Health Officer Order 20-06 (Blanket Isolation/Quarantine Order) to align with CDC recommendations, and developed the attached interim guidance for quarantine among vaccinated health care personnel.

December 02, 2020


Influenza and Respiratory Illness 2020-2021

The Health Advisory is designed to help Alameda County clinicians prepare for the influenza season, which generally occurs from November through April. This Health Advisory outlines several actions requested of Alameda County clinicians, emergency departments, pathologists and healthcare facilities.

July 07, 2020


FDA Issues Warning About Hand Sanitizer Containing Methanol

On July 5, 2020, the Center for Disease Control (CDC) issued a Health Advisory indicating that serious adverse events have been observed in persons using methanol-based hand sanitizers. The CDC advises consumers not to use any hand sanitizer that has been recalled by the FDA due to the potential presence of methanol, a “toxic alcohol”, as an active ingredient. Methanol can cause blindness and/or death when absorbed through the skin or when swallowed. Currently, most of the recalled products are manufactured in Mexico.

June 17, 2020


Updated COVID-19 Healthcare Provider Reporting Requirements for Alameda County

Positive real-time polymerase chain reaction (RT-PCR) tests for current SARS-CoV-2 infection — not antibody or antigen tests — must be reported to the Alameda County Public Health Department (ACPHD). This Advisory updates reporting requirements for Alameda County Providers and Laboratories.

Terms of Use  |  Privacy