Take your child to see a doctor right away. Later, write down what happened and the date and time. It exists to provide compensation for the extremely rare instances where profound injury results from vaccination. The criteria for compensation through the VICP are strict. Most people will never need the program, but it exists to address the extremely rare occasions when people do.
Good sanitation does decrease the risk of some diseases.
However, a permanent drop in the incidence of childhood diseases has been observed that coincides with the widespread use of vaccines. For example, the HIB vaccine has only been in use for about five years. In 1989-1991, the U.S. experienced a measles epidemic which killed 120 individuals. This epidemic took place mostly in urban communities with many unvaccinated children. Japan, the United Kingdom, and Sweden have had pertussis epidemics after a drop in the use of the pertussis vaccine.