Increasing Influenza and Respiratory Syncytial Virus (RSV) Disease in Orange County

October 11, 2022

Influenza virus and respiratory syncytial virus (RSV) disease have been increasing in Orange County for the last several weeks. Compared to pre-pandemic epidemiology this is an early start to the season for both these respiratory viruses. Australia’s influenza season often provides a harbinger for our upcoming season; their recently-concluded season was the most severe in five years.

Provider Recommendations:

Providers are strongly encouraged to:

Additional Recommendations:

Providers should consider the use of antiviral medications for the treatment and chemoprophylaxis of influenza as detailed in CDC’s Influenza Antiviral Medications: Summary for Clinicians.

Providers should continue to test for SARS-CoV-2; ideally, laboratory testing should be multiplex for both SARS-CoV-2 and influenza. Recommendations on treatment of COVID-19 can be found on our COVID-19 Therapeutic Recommendations page

Current COVID-19 vaccination recommendations can be found at CDC’s Interim Clinical Considerations, Use of COVID-19 Vaccines in the United States. This guidance includes recent recommendations on the use of bivalent mRNA COVID-19 vaccine boosters for those 12 years and older. Additional authorizations for the use of bivalent boosters in younger ages are anticipated soon.

The Advisory Committee on Immunization Practices (ACIP) Influenza Vaccine Recommendations provides current recommendations for influenza vaccination. These include the new preferential recommendation for those > 65 years to receive either quadrivalent high-dose inactivated influenza vaccine (HD-IIV4), quadrivalent recombinant influenza vaccine (RIV4), or quadrivalent adjuvanted inactivated influenza vaccine (aIIV4) whenever available.

We will be posting current data on influenza epidemiology on a weekly basis on the OCHCA Influenza page.

Contact Information:
For questions or concerns, please contact the Communicable Disease Control Division at 714-834-8180.
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