Immunization protects community health in multiple ways: immunized individuals are protected from disease; if the community is immunized, the target disease is minimized or eradicated; and those who have weak immune systems or cannot be vaccinated due to medical reasons are protected in an immunized community. Children are more vulnerable and prone to illness than healthy adults due to their immature immune systems. The Centers for Disease Control and Prevention recommends young children should be fully immunized against Polio, Diphtheria, Pertussis (Whooping Cough), Tetanus, Measles, Mumps, and Rubella, Varicella (Chicken Pox), Haemophilus Influenza Type B, Hepatitis A, and Hepatitis B. http://www.leginfo.ca.gov/cgi-bin/displaycode?section=hsc&group=120001-121000&file=120325-120380
California School Immunization Law
California Health and Safety Code, Sections 120325-120375
Under these statutes, children in California are required to receive certain immunizations in order to attend public and private elementary and secondary schools, child care centers, family day care homes, nursery schools, day nurseries, and developmental centers (pre-kindergarten facilities). Schools, and pre-kindergarten facilities are required to enforce immunization requirements, maintain immunization records of all children enrolled, and submit reports.
ARV (All Required Vaccines) rates are shown in these indicators. ARV rates of 95% and above are the safest; lower than 95% creates vulnerabilities.