As infections pummel communities in the US, Mexico and Canada, fear of ‘the most contagious human disease’ growsA 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. Continue reading...