Vaccine-Preventable Diseases
Vaccine-preventable diseases are at or near record lows with most infants and toddlers receiving all recommended vaccines by age 2. There is, however, a group of under-immunized or non-immunized children, who may be partly responsible for increases in outbreaks of vaccine-preventable diseases. Many adolescents and adults are under-immunized as well, partly because they opted out of new vaccines that became available and partly because they were on an old vaccine schedule that may not have recognized the need for two doses such as measles and varicella.