Vaccinating your child has become a hot button issue lately with all the potential negative side effects some vaccines have upon the nuerological development of the childs brain. And therefore there have been a group of parents concerned about these effects and decided that it is a greater risk to vaccinate than to not vaccinate the child.
According to the Centers for Disease Control: Vaccines can prevent infectious diseases that once killed or harmed many infants, children, and adults. Without vaccines, your child is at risk for getting seriously ill and suffering pain, disability, and even death from diseases like measles and whooping cough. The main risks associated with getting vaccines are side effects, which are almost always mild (redness and swelling at the injection site) and go away within a few days. Serious side effects following vaccination, such as severe allergic reaction, are very rare and doctors and clinic staff are trained to deal with them. The disease-prevention benefits of getting vaccines are much greater than the possible side effects for almost all children.
The California statutes give joint or sole legal custody rights to the parents who chose not to immunize their child as stated in Health and Safety Code section 120370.