The Metro Health Department confirmed 10 cases of mumps -- nine of them at the county jail.
After reviewing the medical history of the infected inmates, health officials discovered some of the inmates had been vaccinated for the mumps, and others even had the disease before and yet they came down with it again.
"Most people have to understand that there is no vaccine that is 100% effective," said Bryan Alsip, a doctor with the Metro Health Department. "But the most reassuring thing is we haven't seen a large number. That's probably a statement to the success of the vaccine."
The health department sent samples off to the Center for Disease Control to be tested and thereby determine if this is a new type of mumps.
Dr. Alsip said adjustments to the vaccine will be made if necessary.
