title: Influenza surveillance in the Islamic Republic of Iran from 1991 to 2001.
abstract: To better understand the annual distribution of influenza virus in our country, we isolated and typed 45 viruses from 1043 patients with acute respiratory illnesses in a 10-year study conducted by the National Influenza Centre of the Islamic Republic of Iran. The seasonal distribution of influenza typically ran from November to April. Type A influenza was most common during the winters of 1991-92, 1997-98 and 2000-01 and type B influenza was most common during 1992-5 and 1996-97. Both type A and type B viruses circulated in 1995-96 and 1998-2000. A serological survey based on haemagglutination inhibition test confirmed our findings. The annual pattern of strains isolated was similar to the worldwide pattern during the same interval.
authors.affiliation: Department of Virology, School of Public Health and Institute of Public Health Research, Tehran University of Medical Sciences, Tehran, Islamic Republic of Iran.
authors.forename: T
authors.initials: T
authors.lastname: Mokhtari-Azad
authors.forename: H
authors.initials: H
authors.lastname: Mohammadi
authors.forename: I A
authors.initials: IA
authors.lastname: Moosavi
authors.forename: Z
authors.initials: Z
authors.lastname: Saadatmand
authors.forename: R
authors.initials: R
authors.lastname: Nategh
mesh_terms: D000208:Acute Disease; D000914:Antibodies, Viral / Q000097:blood; D002980:Climate; D014943:Global Health; D006385:Hemagglutination Inhibition Tests; D006801:Humans; D015994:Incidence; D009981:Influenza B virus / Q000276:immunology / Q000302:isolation & purification; D007251:Influenza, Human / Q000097:blood / Q000453:epidemiology* / Q000276:immunology / Q000821:virology*; D007492:Iran / Q000453:epidemiology; D017720:Molecular Epidemiology; D010614:Pharynx / Q000821:virology; D011159:Population Surveillance; D012621:Seasons; D016036:Seroepidemiologic Studies
chemical_list: D000914:Antibodies, Viral