The World Health Organization warned on Wednesday that President Donald Trump’s bid to overhaul child vaccination in the United States went against “decades of evidence”. Trump signed an order on Monday pushing for a rethink of school vaccine mandates and repeating calls for the measles, mumps, and rubella (MMR) vaccine to be separated into three separate shots. His Health Secretary Robert F. Kennedy Jnr founded an anti-vaccine group and has long promoted a disproved link between the MMR shot...