Growing scepticism of vaccines in Europe, especially in countries like France should be a cause for concern.
Research shows for the first time how measles – one of the world's most contagious diseases – erases the body's memory of previous pathogens, effectively wiping its immunity memory.
Social media companies have struggled to combat fake news of all sorts, from political propaganda to bogus warnings about vaccines such as MMR for measles, mumps, and rubella.
WHO and UNICEF blame war, inequality as well as complacency for 20 million children missing immunisation.
Some people vaccinate their children simply because it's a requirement for children to attend school or even sporting events, the World Health Organization says highlighting the threat of hesitancy.
The Pan-American Health Organization, the regional arm of the World Health Organization, signals a more than 30 percent spike in measles cases worldwide last year as compared with 2016.
Pakistan, Afghanistan and Nigeria, are the only other countries that suffer from endemic polio, a childhood virus that can cause paralysis or death.
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