African Health Sciences
Makerere University Medical School
Vol. 18, No. 4, 2018, pp. 1134-1143
Bioline Code: hs18147
Full paper language: English
Document type: Study
Document available free of charge
African Health Sciences, Vol. 18, No. 4, 2018, pp. 1134-1143
© Copyright 2018 - Odun-Ayo
Influenza virus A (H1 and H3) and B co-circulation among patient presenting with acute respiratory tract infection in Ibadan, Nigeria|
Odun-Ayo, Frederick; Odaibo, Georgina & Olaleye, David
Background: Influenza is an acute respiratory disease that continues to cause global epidemics and pandemics in human with
significant mortality and morbidity.
Objectives: This study was designed to identify the circulating influenza virus in Ibadan, Nigeria during the 2006/2007 season.
Methods: Throat swab samples were collected from patients presenting with acute respiratory tract infection at the Out-Patient
Departments of major hospitals in Ibadan over a period of seven months from November 2006 to May 2007. Isolation of influenza
virus was performed using Madin-Darby Canine Kidney cell line and 10 days old chicken embryonated egg. Isolates was
identified by haemagglutination and haemagglutination-inhibition assays using selected CDC Influenza reference antisera (A, B,
subtype H1 and H3).
Results: Out of 128 patients tested, 21(16.4%) yielded positive for virus isolation. Identification of the isolates showed that
19(14.8%) were positive for influenza virus out of which 11(8.6%) and 8(6.2%) were influenza A and B viruses respectively.
Influenza A virus 6(4.7%) were subtype H1; 4(3.1%) were co-subtype H1 and H3; and 1(0.8%) was not inhibited by subtype H1
Conclusion: The circulation of influenza virus A and B in this study is important to contributing knowledge and data to influenza
epidemiology and surveillance in Nigeria.
Influenza A; haemagglutination; isolation; Nigeria.