Influenza and flu vaccine

The app compares influenza symptoms and outcomes with flu vaccine side effects, and shows how community vaccination (herd immunity) changes disease risk.

See influenza risks, symptoms, and outcomes alongside vaccine side effects in the same model.

This is an educational simulation and does not provide medical advice or personalized risk assessment.

• The common side effects of the flu vaccine are sore arm or mild aches and low-grade fever or fatigue. A rare serious side effect is severe allergic reaction.
• The common symptoms and outcomes of influenza are flu illness and hospitalization. A rare serious outcome is death.
• By adjusting community vaccination rate, you can explore how herd immunity changes the probability of influenza infection in the model.