A new school immunization law requires all students entering 7th through 12th grades to be immunized with a pertussis (whooping cough) vaccine booster called TDAP.
Pertussis is a very contagious respiratory disease that can be severe and last for months. The immunity received from either early childhood immunization or pertussis disease wears off over time, leaving older students and adults susceptible again to pertussis. Immunization with Tdap can protect students, schools and communities against pertussis.
Websites for more information
California Department of Education
Shots for School