Many people won’t experience any side effects. low-grade fever in the days immediately following the injectionĪny side effects that do occur often only last a day or two.soreness around the flu shot injection site.The most common side effects of the flu shot include: The side effects of a shot outweigh the possible symptoms of a flu infection later. These side effects are often mild and only last a short period of time. You may experience some side effects from the flu shot. These strains aren’t strong enough to cause an illness. You aren’t going to become sick because you received the vaccine.įlu vaccines contain dead or weakened strains of the flu virus. It’s important to understand that the flu vaccine can’t cause you to develop the flu. Many people report avoiding the flu vaccine each year for fear that it will make them sick. Stay updated on the latest science-backed health, fitness, and nutrition news by signing up for the newsletter here. Not sure where to go? Here’s where you can get the flu shot all season long. It’s also important to remember that skipping the flu shot isn’t just dangerous for you-it’s dangerous for the people around you who are particularly prone to complications, such as people 65 and older, children younger than 5, pregnant women, and people with long-term medical conditions like heart disease, lung disease, and diabetes. From October 2018 to early May 2019, up to 657,000 people were hospitalized with the flu, and up to 61,200 people died, according to preliminary estimates from the CDC. And yes, flu complications can be serious. Why it’s still important to get a flu shotĮven if you wind up catching a flu strain that wasn’t covered in the vaccine, CDC research shows being inoculated lessens your risk of developing severe complications from the disease. In the end, the flu shot usually ends up being 40 to 60 percent effective, according to the CDC. More than 100 national influenza centers worldwide retrieve flu samples from patients year-round, and based on the data they collect, they select the viruses they believe are most likely to circulate during the following flu season. The flu vaccine changes every year based on the specific viruses currently circling the globe. You’ve probably heard that the flu shot isn’t 100 percent effective, and that’s true. That’s part of the reason why the CDC recommends getting your flu shot before the end of October. That takes about two weeks, and unfortunately, it’s possible that you could catch the flu during that 14-day period. Then there’s the chance you could catch the flu before your vaccine has had enough time to build up the antibodies that fend off influenza. That’s why you also need to be cautious about washing your hands frequently and avoiding touching your face, even after you’ve had the flu vaccine. “A fair number of people get the flu vaccine, and it just so happens that they caught something else around the time and they link the two things together in their minds,” says Dr. Plus, there are so many different viruses circulating during the flu season, there’s no guarantee you won’t get sick from something other than the flu. Some people even develop a low-grade fever as the immune system responds to the vaccination-but it’s not a contraction of the flu, she explains. That process of activating the immune system can sometimes feel like you’re catching something because you start to feel achy, and your arm might get a little sore. Should You Get the Flu Shot When You’re Sick?.
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