Respiratory Viruses Rising: Flu adn RSV Cases Increase Across the US
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Doctors nationwide are reporting a surge in respiratory viruses, including influenza and Respiratory Syncytial Virus (RSV). These viruses are causing significant illness, hospitalizations, and, in some cases, death.
National Trends in Flu and RSV
According to the Centers for Disease Control and Prevention (CDC), the current flu season (estimated as of December 28, 2025) has already resulted in approximately 4.6 million illnesses, over 49,000 hospitalizations, and 1,900 deaths. You can find the latest data in the CDC’s FluView report.
san Diego County Experiences Increase
San Diego County is also experiencing a rise in respiratory illnesses. The County’s Respiratory Virus Surveillance Report indicates 3,191 reported flu cases and 456 reported RSV cases during the 2025-2026 season.
Why the Increase Now?
Dr. Davey Smith, an Infectious Disease Specialist at UC San Diego, explains the seasonal pattern: “They have started because they always start on the East Coast and make their way towards us and it’s after the holidays. So, people have already started to gather, the weather’s already started to get colder, people have been indoors, and it’s already started to ping pong around.” Increased indoor activity and colder weather create ideal conditions for the spread of these viruses.
Protecting Yourself and Others
Doctors emphasize the importance of preventative measures to mitigate the spread of respiratory viruses.
* Hand Hygiene: Frequent handwashing is crucial.
* Masking: Wearing a mask is recommended, especially when interacting wiht individuals who have weakened immune systems.
* Stay Home When Sick: Avoid attending gatherings if you are feeling unwell. Even a mild illness can be serious for vulnerable individuals. As Dr. Smith notes, “You might do OK with the flu or the RSV, but grandma or great aunt might not.”
vaccination is Key
Staying up-to-date on vaccinations for both flu and RSV is strongly recommended. Vaccines are available and can considerably reduce the risk of severe illness, hospitalization, and death. The CDC website provides extensive information on recommended vaccines.
Looking Ahead
Respiratory virus seasons can be unpredictable. Continued vigilance, adherence to preventative measures, and widespread vaccination are essential to protect public health. monitoring reports from the CDC and local health authorities like San Diego County will provide ongoing insights into the evolving situation.
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