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Influenza at the human-animal interface Summary and assessment as of 31 March 2015
Human infection with avian influenza A(H5) viruses From 2003 through 31 March 2015, 826 laboratory-confirmed human cases of avian influenza A(H5N1) virus infection have been officially reported to WHO from 16 countries. Of these cases, 440 have died.
Since the last WHO Influenza update on 3 March 2015, 42 new laboratory-confirmed human cases of avian influenza A(H5N1) virus infection, including 11 fatal cases, were reported to WHO from Egypt (37), China (three) and Indonesia (two). Of the 37 human cases of influenza A(H5N1) virus infection reported from Egypt, 14 had onset of disease in February and the rest had onset of disease in March. The cases were reported from 14 different governorates of Egypt (see table 1 in the annex). The age range of the 37 cases is from one to 77 years, with a median of 24 years and 38% of the cases are under 10 years of age. Almost twice as many females compared to males were affected. Eight of the 37 cases (22%) died and all eight fatal cases were in patients 10 years of age and older. All but one case had exposure to poultry or poultry markets and the exposure history of the one case is still under investigation. All cases were hospitalized and all reportedly received treatment with antiviral medication. Contacts of the cases were followed for 14 days and there have not been reports of cases in any contacts of confirmed cases. The newly-reported cases included one cluster of two confirmed cases in a mother and son from Sharkia governorate. The two cases had onset of illness on the same day and both had exposure to backyard poultry, suggesting common exposure.
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Human infection with avian influenza A(H5) viruses From 2003 through 31 March 2015, 826 laboratory-confirmed human cases of avian influenza A(H5N1) virus infection have been officially reported to WHO from 16 countries. Of these cases, 440 have died.
Since the last WHO Influenza update on 3 March 2015, 42 new laboratory-confirmed human cases of avian influenza A(H5N1) virus infection, including 11 fatal cases, were reported to WHO from Egypt (37), China (three) and Indonesia (two). Of the 37 human cases of influenza A(H5N1) virus infection reported from Egypt, 14 had onset of disease in February and the rest had onset of disease in March. The cases were reported from 14 different governorates of Egypt (see table 1 in the annex). The age range of the 37 cases is from one to 77 years, with a median of 24 years and 38% of the cases are under 10 years of age. Almost twice as many females compared to males were affected. Eight of the 37 cases (22%) died and all eight fatal cases were in patients 10 years of age and older. All but one case had exposure to poultry or poultry markets and the exposure history of the one case is still under investigation. All cases were hospitalized and all reportedly received treatment with antiviral medication. Contacts of the cases were followed for 14 days and there have not been reports of cases in any contacts of confirmed cases. The newly-reported cases included one cluster of two confirmed cases in a mother and son from Sharkia governorate. The two cases had onset of illness on the same day and both had exposure to backyard poultry, suggesting common exposure.
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