State law requires that each student be fully immunized against polio, measles, rubella (German measles), diphtheria, and mumps upon admission to school. A Certificate of Immunization issued by a physician or clinic is needed as proof. If the child has had the disease, or the immunization is medically contraindicated, this must be stated by the physician. Measles and mumps and varicella immunizations must be given no more than 4 days before the first birthday. Students born on or after 1/1/1993, and students who enroll in the 7th grade must be immunized against Hepatitis B. Any student born after 1/1/1994 who is entering 6th grade must be immunized against varicella, or provide medical documentation of having had the chickenpox disease. Disease history (physician's note) for rubella is not acceptable for certification - the only alternative to rubella vaccine is a blood test to show presence of rubella antibodies. Any child entering school (grades K-12) will be required to have two doses of measles vaccine. Consistent with New York State law students who fail to meet the minimum requirements will be barred from attending school.