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"If you have the flu or COVID, your symptoms are going to hang around for a little longer and you usually feel more sick." As for symptoms more associated with viruses than period flu, Mysore said ...

Young children's immune systems haven't encountered many germs before. "The immune responses to the [flu] virus have to be developed from scratch," Iwasaki said. Because a child's immune system ...

This will be the first time since 2012 that U.S. flu vaccines have been trivalent, meaning three-component, as opposed to quadrivalent, or four-component. But why the change? Based on all ...

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You can get a flu shot while sick if you have mild symptoms and no fever. Most healthcare providers feel it is best to get your flu shot early since it takes time to build immunity after you've ...

In October 2024, about 91.4% of all confirmed flu cases were caused by influenza A. You'll likely have symptoms that affect your nose, throat, and lungs—such as fever, cough, fatigue ...

In a new study, University of Georgia researchers have found that natural immunity from previous flu infections has a significant impact on how well future influenza vaccinations work. That may ...

Now we have a better understanding of how preexisting immunity to influenza influences immune responses to different types of vaccines." Flu shots aim to keep up with an evolving virus Each flu ...