Vaccination rates are down. Pertussis cases on the rise.
So far the outbreak has been contained to Floyd, O’Dell said, but she noted that there has been a significant increase in the number of pertussis cases, both statewide and nationally. The number of Virginia cases confirmed by lab tests jumped 72 percent from 2009 to 2010, she said.
The outbreak in Floyd was caused by people not being properly vaccinated against the disease, O’Dell said.