Viral Respiratory Surveillance for LA County

archived reports

These reports provide crucial surveillance data on the occurrence and impact of respiratory illnesses in Los Angeles County. Respiratory virus surveillance reporting has evolved over time - previously separate reports for influenza and COVID-19 surveillance are now integrated into the RespWatch dashboard, which also includes data on RSV and other respiratory pathogens since 2023.

Note: The reporting period for each respiratory virus season begins during Morbidity and Mortality Weekly Report (MMWR) week 40 and ends week 39 of the following year. MMWR weeks refer to the sequential numbering of weeks (Sunday through Saturday) during a calendar year.

COVIDWatch Archive

Flu Watch Archive

Flu Surveillance Special Reports
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Public Health has made reasonable efforts to provide accurate translation. However, no computerized translation is perfect and is not intended to replace traditional translation methods. If questions arise concerning the accuracy of the information, please refer to the English edition of the website, which is the official version.

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