Virus Strains: Different strains of influenza viruses circulate each year, with some being more virulent than others. Vaccination Rates: Higher rates of flu vaccination can mitigate the spread and severity of the flu. Public Health Interventions: Measures such as social distancing, school closures, and public awareness campaigns can influence flu trends. Weather Patterns: Seasonal variations, like colder weather, can contribute to higher flu transmission rates.
