This theory is not supported by scientific evidence, but has contributed to decreased vaccination rates that according to the medical community, endanger children.

Health professionals have heavily criticized media coverage of the controversy for triggering a decline in vaccination rates.

Despite high vaccination rates, recent outbreaks have infected thousands of people in the U.S.

Today, the vaccination rate is about 50 percent.

Developed nations must also improve their vaccination rates and drastically reduce antibiotic usage.

It also will continue to cause periodic epidemics in areas such as South America with higher, but still inadequate, vaccination rates.

Higher vaccination rates were associated not just with being older, but also with being better educated.

Explanations for the trend include declining vaccination rates, more travel related exposures and better diagnostic tests.

The findings are unsettling news, because vaccination rates for chickenpox are very low.

This hypothesis is not supported by scientific evidence, but has contributed to decreased vaccination rates.