In Kenya cassava mosaic virus, maize streak virus and groundnut viral diseases caused the loss of up to 70 per cent of the crop. A short time after Henry Tudor 's victory at the Battle of Bosworth on 22 August , his army suddenly went down with "the English sweat ", which contemporary observers described as a new disease. The infection was caused by a virus from fruit bats, after their colony had been disrupted by deforestation. Physicians — what few there were — relied as much on astrology as they did on their limited medical knowledge. It has had many other names including rubeola from the Latin word rubeus , "red", and morbilli , "small plague". Current Opinion in Immunology. Human metapneumovirus , which is a cause of respiratory infections including pneumonia , was discovered in
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