Group items tagged YELLOW - Class of 2020B

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Yellow fever causes 200,000 infections and 30,000 deaths every year
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,[2] with nearly 90% of these occurring in Africa
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Since the 1980s, the number of cases of yellow fever has been increasing.[6][2] This is believed to be due to fewer people being immune,
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more people living in cities, people moving frequently, and changing climate.[2] The disease originated in Africa, where it spread to South America through the slave trade in the 17th century.[1] Since the 17th century, several major outbreaks of the disease have occurred in the Americas, Africa, and Europe.[1] In the 18th and 19th centuries, yellow fever was seen as one of the most dangerous infectious diseases.[1] The yellow fever virus was
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