Prominent US anti-vaxxer says he caught measles and traveled back home

Brian Hooker seems to not have alerted authorities of his illness after leaving west Texas

One of the most prominent anti-vaccine activists in the US says he caught measles in west Texas and traveled back home - but he seems not to have alerted local authorities of his illness, which means the highly transmissible virus may have spread onward.

Measles is a threat to people who are unvaccinated or immune-compromised. In anti-vaccine communities, it may quickly find a foothold and spread largely under the radar before ballooning into an outbreak.