"You may not be able to prevent catching a cold or the flu, but you can greatly reduce your chances and decrease the likelihood that you'll have a severe case if you do get sick. The well established advice meant to keep you healthy also protects others by reducing the spread of these diseases. Get a Flu Shot "The single best way to reduce the risk of seasonal flu and its potentially serious complications is to get vaccinated each year," according to the CDC."
"Elena Diskin and Lisa Sollot, two respiratory specialists at the Virginia Department of Health, and Christy Gray, the director of the Division of Immunization there, all agree that there's still time to get the annual flu vaccine. 'The season runs from October through the end of April,' they wrote in an email, adding 'we typically see the most flu activity in January and February.' So yes, it's still worthwhile to get a flu shot if you haven't had one yet."
"In public health information about flu vaccines last updated in 2024, the CDC confirms that, 'Flu vaccines cannot cause flu illness. Flu vaccines given with a needle (i.e., flu shots) are made with either inactivated (killed) viruses, or with only a single protein from an influenza virus.'"
Annual vaccination is the single best method to reduce the risk of seasonal influenza and its serious complications. The optimal time for vaccination is September or October when new formulations typically become available, but receiving the vaccine later in the season still provides protection. Influenza season generally runs from October through April with peak activity often occurring in January and February. Flu shots given by needle contain inactivated viruses or a single viral protein and cannot cause flu illness. The nasal spray contains weakened live viruses and is intended for certain age groups.
Read at WIRED
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