Weather records predict future cholera outbreaks

 作者:汤栗     |      日期:2019-03-07 04:10:02
CHOLERA is known to strike most often after warm or wet weather. Now the International Vaccine Institute in Seoul, South Korea, has come up with a more precise forecast, based on records from the Tanzanian island of Zanzibar. A 1 °C rise in average minimum temperature signals a doubling in the number of cases four months later; 20 centimetres extra rainfall signals a doubling two months later (American Journal of Tropical Medicine and Hygiene, DOI: 10.4269/ajtmh.2011.10-0277). This could indicate when to vaccinate. Cholera vaccination is not widely used, but with a virulent strain of cholera like the one in Haiti now causing outbreaks that last months, there have been calls for more strategic vaccination. More on these topics: