Spread and Evolution of Respiratory Syncytial Virus A Genotype ON1, Coastal Kenya, 2010–2015

Otieno, James R.; Kamau, Everlyn M.; Agoti, Charles N.; Lewa, Clement; Otieno, Grieven; Bett, Ann; Ngama, Mwanajuma; Cane, Patricia A.; Nokes, D. James

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Spread and Evolution of Respiratory Syncytial Virus A Genotype ON1, Coastal Kenya, 2010–2015

Published Date:

Feb 2017

Source:

Emerg Infect Dis. 23(2):264-271.

[PDF-1.65 MB]

Details:

Alternative Title:

Emerg Infect Dis

Personal Author:

Otieno, James R. ; Kamau, Everlyn M. ; Agoti, Charles N. ; Lewa, Clement ; Otieno, Grieven ; ... More ▼

Description:

In February 2012, the novel respiratory syncytial virus (RSV) group A, genotype ON1, was detected in Kilifi County, coastal Kenya. ON1 is characterized by a 72-nt duplication within the highly variable G gene (encoding the immunogenic attachment surface protein). Cases were diagnosed through surveillance of pneumonia in children at the county hospital. Analysis of epidemiologic, clinical, and sequence data of RSV-A viruses detected over 5 RSV seasons (2010/2011 to 2014/2015) indicated the following: 1) replacement of previously circulating genotype GA2 ON1, 2) an abrupt expansion in the number of ON1 variants detected in the 2014/2015 epidemic, 3) recently accumulation of amino acid substitutions within the ON1 duplicated sequence, and 4) no clear evidence of altered pathogenicity relative to GA2. The study demonstrates the public health importance of molecular surveillance in defining the spread, clinical effects, and evolution of novel respiratory virus variants.

Subject:

[+]

Pubmed ID:

28098528

Pubmed Central ID:

PMC5324789

Document Type:

Journal Article

Collection(s):

Emerging Infectious Diseases

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