Key Evidence: The highly contagious varicella infections (chicken pox) cause children, on average, to miss 9 days of school. A highly effective varicella vaccine was introduced in the US in the mid-1990s.
From the VoICE editors: This study was conducted in 1987 in the US.
Key Evidence: In a study of school-based influenza vaccination in Los Angeles County, California, children who were vaccinated missed significantly fewer days of school than children who were not (2.8 vs. 4.3 per 100 school days).