You could not be capable of stop catching a chilly or the flu, however you possibly can enormously cut back your possibilities and reduce the chance that you will have a extreme case if you happen to do get sick. The properly established recommendation meant to maintain you wholesome additionally protects others by decreasing the unfold of those ailments.
Get a Flu Shot
“The only greatest approach to cut back the chance of seasonal flu and its doubtlessly severe issues is to get vaccinated every year,” according to the CDC.
Many well being professionals, together with infectious illness specialist Steven Gordon, MD, and infectious illness scientific pharmacist Kaitlyn Rivard, PharmD, each on the Cleveland Clinic, say the best time to get vaccinated is in September or October, when new annual variations of the vaccines sometimes turn out to be accessible in North America. However don’t fret if you happen to missed that window, as a result of the second greatest time is “now.”
Elena Diskin and Lisa Sollot, two respiratory specialists on the Virginia Division of Well being, and Christy Grey, the director of the Division of Immunization there, all agree that there is nonetheless time to get the annual flu vaccine. “The season runs from October by means of the tip of April,” they wrote in an e-mail, including “we sometimes see essentially the most flu exercise in January and February.” So sure, it is nonetheless worthwhile to get a flu shot if you have not had one but.
Flu Vaccines Can’t Give You the Flu
Whereas it is doable to really feel unwell after getting a flu vaccine, you can not get the flu from it. In public health information about flu vaccines final up to date in 2024, the CDC confirms that, “Flu vaccines can not trigger flu sickness. Flu vaccines given with a needle (i.e., flu photographs) are made with both inactivated (killed) viruses, or with solely a single protein from an influenza virus.” The nasal spray vaccine, which is for folks between the ages of two and 49, and which you could possibly administer at house, “comprises reside viruses which can be attenuated (weakened) in order that they won’t trigger sickness,” in accordance with the CDC.
After receiving a vaccine, it takes as much as two weeks for it to have its full impact, nonetheless. Meaning if you happen to have been uncovered to the flu virus both proper earlier than or as much as two weeks after receiving the vaccine, you could possibly get sick, but it surely would not be as a result of vaccine.
Flu Vaccines Are Extremely Efficient at Stopping Extreme Sickness
The flu vaccine adjustments yearly based mostly on which strains of the virus consultants suppose can be prevalent, and whereas it isn’t foolproof, it’s extremely efficient at stopping extreme sickness. Within the 2024-2025 season, for instance, flu vaccines have been 56 percent effective, which is increased than it had been in virtually 15 years.
“Vaccine effectiveness is measured by evaluating the frequency of well being outcomes (e.g., symptomatic sickness, hospitalization, loss of life) in vaccinated and unvaccinated folks in the true world,” say Diskin, Solot, and Grey on the Virginia Division of Well being. Effectiveness is completely different from efficacy, which measures outcomes in managed trials.
“In plain language, [vaccine effectiveness] describes how a lot much less possible a vaccinated individual is to get sick in comparison with an unvaccinated individual, based mostly on real-world information,” says Sai Paritala, an assistant professor on the College of Nebraska Medical Middle School of Public Well being and former epidemiologist.
