Flu shot side effects like fatigue don’t mean you have the flu, but they do exist – here’s the ones you should know about
In a normal season, influenza affects 5-20% of the population. That’s tens of millions of people in the United States alone. And the severity of the virus varies: some people have mild symptoms, while others die of the flu. According to the World Health Organization, seasonal flu kills between 290,000 and 650,000 people a year. …