CAHAN San Diego Alerts


California Health Alert Network (CAHAN) San Diego Communications (Alerts, Advisories, Updates, and Information)—2019-2020

The County of San Diego Health and Human Services Agency (HHSA) Public Health Services (PHS) Division sends priority health communications to health care and public safety professionals in San Diego County through the California Health Alert Network (CAHAN) San Diego. Topics include communicable diseases outbreaks, emerging health issues, requests for heightened surveillance related to communicable diseases, recommendations on communicable disease identification, prevention, infection control, specimen submission and laboratory testing, and emergency preparedness information.

To receive CAHAN San Diego communications, click the “Subscribe to CAHAN San Diego” button. It takes only a few minutes to sign up. PHS will not share your contact information.

CAHAN San Diego 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 attention.

Update: Provides updated information regarding an incident or situation; unlikely to require immediate action.

Information: Provides general information that is not necessarily considered to be of an emergent nature.


2020 CAHAN Communications

Health Advisory—January 24

2019 Novel Coronavirus

Health Advisory—January 10

Elevated Influenza Activity



2019 CAHAN Communications

Health Advisory—December 24

National Increase in Disseminated Gonococcal Infection Cases

Health Advisory—December 4

Severe Myonecrosis and Wound Botulism Associated with Black Tar Heroin

Health Update—November 26

Mumps in San Diego

Health Advisory—November 19

Ongoing Risk of Highly Drug-Resistant Infections in Patients Following Hospitalization or Invasive Procedures in Tijuana, Mexico

Health Update—October 3

Vaping Associated Pulmonary Injury

Health Information—September 25

Disease Reporting Requirement (Title 17) Updates

Health Alert—August 28

Vaping-Associated Pulmonary Injury

Health Information—August 27

Vector-Borne Illnesses of Public Health Significance

Health Alert—August 21

Second Measles Case in San Diego County

Health Alert—August 7

Measles Case in San Diego County

Health Advisory—August 1

Nationwide Shortage of Tuberculin Skin Test Antigens: San Diego Recommendations for Patient Care and Public Health Practice

Health Information—August 1

Middle East Respiratory Syndrome Coronavirus (MERS-CoV) and the Hajj

Health Update—July 19

Mumps and Acute Parotitis in San Diego

Health Alert—June 29

Shiga toxin-producing Enteric Illnesses Associated with Attendance at County Fair

Health Information—June 26

Animal Rabies in San Diego County

Health Advisory—June 13

Candida auris Detected in California Healthcare Facilities

Health Advisory—June 7

Update #2: Measles Outbreaks in the United States and Overseas

Health Advisory—May 24

Increased Influenza-Like Illness in Local Migrant Shelter

Health Update—April 25

Measles Outbreaks in the United States and Overseas

Health Advisory—March 28

Influenza Season Continues with an Increase in Influenza A(H3N2) Activity

Health Information—March 25

HIV Testing Recommended in All Healthcare Settings

Health Update—March 18

Carbapenem-resistant Pseudomonas aeruginosa Infections after Hospitalization in Tijuana

Health Advisory—March 15

Mumps and Acute Parotitis Cases Increase in San Diego

Health Advisory—February 14

Kawasaki Disease Increased in San Diego

Health Advisory—February 12

Strangulation: Intimate Partner Violence in San Diego County

Health Advisory—January 31

Measles Outbreaks in Washington, New York, and Overseas

Health Advisory—January 25

Infections Associated with Unapproved Stem Cell Injections

Health Alert—January 16

Carbapenem-resistant Pseudomonas aeruginosa Infections after Surgery in Tijuana