rubella

The highly contagious disease was reported by someone 20 to 24 years old in Polk. It's unknown if it's connected to a school outbreak in Broward, where a case involving a child under 5 was confirmed.

The cases are mostly linked to international travel. And because Florida is a major tourism and travel hub, health officials are imploring adults to ensure their kids receive the two-dose vaccination.

Forty-seven years after a vaccine against rubella was created, the virus still harms about 300 newborns every day, worldwide. Even a cheap vaccine can be a financial burden for poorer countries.