Metro Health is trying to keep vaccines from becoming a victim of their own success.

It's National Infant Immunization Week, and Metro Health said that there are so many diseases like measles and mumps that have pretty much become a problem of the pasts, that it's easy for parents to overlook the importance of vaccinating babies.

"It's more education, and as parents are getting more knowledge about the education the awareness, the importance of vaccinations, I think that the vaccination rate is increasing," Dr. Anil Mangla, chief of Epidemiology at Metro Health, said.

Data shows that even small increases in the number of people vaccinated produce huge decreases in the number of people who get sick.

Take chicken pox. A four percent increase in the number of vaccines in Bexar County from 2007 to 2011 resulted in a 63 percent decrease in the number of people who got the virus.

Even though the focus this week is on infants, Mangla said adults also play a big role in keeping kids safe.

He points to a recent outbreak of pertussis in Georgia as an example.

"The disease, the pertussis, was transferred from a grandparent to a child," he said.

He said that's why it's important for adults to stay current on boosters too.