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(updated on 2017/03/17)

H7N9 from home towns 禽流感從故鄉來

© 2017
Map created by CUHK SpatioEpi Group

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As of 10 March 2017, 21 human cases of avian influenza H7N9 have been reported in Hong Kong. All were imported cases from China, as the patients had history of travelling to Mainland China and some had possible exposure to poultry. The map shows the suspected infection locations of these cases (yellow dots) in China. In retrospect, the first human case of H7N9 was reported in China in March 2013. Globally over 1300 cases have been reported. The geographic distribution of all cumulative cases by province (as of 10 March 2017) is shown in graduated colour. The spatiotemporal relationship between H7N9 cases in Hong Kong and Guangdong is a cause for concern. This also suggests that the future occurrence of H7N9 in Hong Kong would depend largely on the control of avian influenza outbreaks in Guangdong Province. Data for the map were obtained from multiple media sources derived from reports in different health authorities.