CDC Flags Polio Risk in 30+ Countries

The CDC issues a Level 2 travel advisory for over 30 countries where polio circulates, urging travelers to update vaccinations before trips. Popular destinations like Spain, UK, and Germany top the list alongside others such as Afghanistan, Nigeria, and Gaza. Adults with routine childhood vaccines qualify for a single lifetime booster. Polio spreads through contaminated food or water and can paralyze or kill.