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Large sequential outbreaks caused by influenza A (H3N2) and B viruses in an institution for the mentally handicapped
Author(s) -
Sugaya N.,
Kusumoto N.,
Suzuki Y.,
Nerome R.,
Nerome K.
Publication year - 1996
Publication title -
journal of medical virology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 121
eISSN - 1096-9071
pISSN - 0146-6615
DOI - 10.1002/(sici)1096-9071(199610)50:2<120::aid-jmv4>3.0.co;2-c
Subject(s) - outbreak , beijing , virology , medicine , virus , human mortality from h5n1 , epidemiology , environmental health , covid-19 , geography , disease , china , infectious disease (medical specialty) , archaeology
During the mixed epidemic caused by influenza A (H3N2) and B in the 1992–1993 season in Japan, large sequential outbreaks occurred in an institution for mentally handicapped people where none of the residents or staff members had been immunized. During the influenza A outbreak (A/Beijing/32/92‐like strain) in January, 37.0% of the residents (85/230) and 31.4% of the staff (75/239) had an influenza‐like illness. During the influenza B outbreak (B/Panama/45/90‐ and B/Beijing/184/ 93‐like strain) in late February, 59.0% of the residents and 24.3% of the staff had an influenza‐like illness. As many as 25.2% of the residents had two episodes of influenza‐like illness during the season, as opposed to only 5.4% of the staff members. Mixed epidemics probably have a severe impact on institutionalized high‐risk people, adversely affecting them almost twice as much as influenza epidemics caused by a single virus. © 1996 Wiley‐Liss, Inc.