(The Guardian) – A leading immunologist warned of a “post-herd-immunity world”, as measles outbreaks affect communities with low vaccination rates in the American south-west, Mexico and Canada.

The US is enduring the largest measles outbreak in a quarter-century. Centered in west Texas, the measles outbreak has killed two unvaccinated children and one adult and spread to neighboring states including New Mexico and Oklahoma.

“We’re living in a post-herd-immunity world. I think the measles outbreak proves that,” said Dr Paul Offit, an expert on infectious disease and immunology and director of the Vaccine Education Center at Children’s Hospital of Philadelphia. (Read More)