Varicella and varicella vaccine

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

See varicella 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 varicella vaccine are soreness, swelling, or redness and fever or mild rash. A rare serious side effect is severe allergic reaction.
• The common symptoms and outcomes of varicella are itchy rash illness. Rare serious outcomes include hospitalization and death.
• By adjusting community vaccination rate, you can explore how herd immunity changes the probability of varicella infection in the model.