What percentage of the population typically gets the flu?

The percentage of the population that typically gets the flu ranges from 5% to 20%, which reflects the annual impact of seasonal influenza viruses. This range accounts for various factors, including the virulence of the circulating flu strains, public health initiatives, vaccination rates, and individual susceptibility based on health status and age. Seasonal flu outbreaks can influence this percentage, often leading to a rise in cases during peak flu season, particularly among vulnerable populations like young children, the elderly, and those with compromised immune systems. This information is critical for understanding public health measures and preparing for flu season effectively.