After people started testing positive for hepatitis C in a coastal Florida town in December, state officials collected blood from patients, wrapped their specimens in dry ice and mailed them straight to the Centers for Disease Control in Atlanta, Ga.

The best way to prevent hepatitis B infection is vaccination. The vaccines are highly effective at preventing infection in infants and for long-term protection into adulthood.

A vote on the hepatitis B vaccine for newborns has been pushed to Friday. Advisors say the wording kept changing, and they were confused about exactly what they were being asked to vote on.