Molecular epidemiology of influenza A(H1N1)pdm09 viruses from Pakistan in 2009-2010.

<h4>Background</h4>In early 2009, a novel influenza A(H1N1) virus that emerged in Mexico and United States rapidly disseminated worldwide. The spread of this virus caused considerable morbidity with over 18000 recorded deaths. The new virus was found to be a reassortant containing gene s...

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Autores principales:	Uzma Bashir Aamir, Nazish Badar, Muhammad Rashid Mehmood, Nadia Nisar, Rana Muhammad Suleman, Shehzad Shaukat, Salman Sharif, Jaleel Kamran, Syed Sohail Zahoor Zaidi, Birjees Mazher Kazi, Larisa Gubareva, Xiyan Xu, Rebecca Garten, Alexander Klimov
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/51e3de8159754548a91206f0e3b517b9
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spelling	oai:doaj.org-article:51e3de8159754548a91206f0e3b517b92021-11-18T07:08:17ZMolecular epidemiology of influenza A(H1N1)pdm09 viruses from Pakistan in 2009-2010.1932-620310.1371/journal.pone.0041866https://doaj.org/article/51e3de8159754548a91206f0e3b517b92012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22916112/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Background</h4>In early 2009, a novel influenza A(H1N1) virus that emerged in Mexico and United States rapidly disseminated worldwide. The spread of this virus caused considerable morbidity with over 18000 recorded deaths. The new virus was found to be a reassortant containing gene segments from human, avian and swine influenza viruses.<h4>Methods/results</h4>The first case of human infection with A(H1N1)pdm09 in Pakistan was detected on 18(th) June 2009. Since then, 262 laboratory-confirmed cases have been detected during various outbreaks with 29 deaths (as of 31(st) August 2010). The peak of the epidemic was observed in December with over 51% of total respiratory cases positive for influenza. Representative isolates from Pakistan viruses were sequenced and analyzed antigenically. Sequence analysis of genes coding for surface glycoproteins HA and NA showed high degree of high levels of sequence identity with corresponding genes of regional viruses circulating South East Asia. All tested viruses were sensitive to Oseltamivir in the Neuraminidase Inhibition assays.<h4>Conclusions</h4>Influenza A(H1N1)pdm09 viruses from Pakistan form a homogenous group of viruses. Their HA genes belong to clade 7 and show antigenic profile similar to the vaccine strain A/California/07/2009. These isolates do not show any amino acid changes indicative of high pathogenicity and virulence. It is imperative to continue monitoring of these viruses for identification of potential variants of high virulence or drug resistance.Uzma Bashir AamirNazish BadarMuhammad Rashid MehmoodNadia NisarRana Muhammad SulemanShehzad ShaukatSalman SharifJaleel KamranSyed Sohail Zahoor ZaidiBirjees Mazher KaziLarisa GubarevaXiyan XuRebecca GartenAlexander KlimovPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 8, p e41866 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Uzma Bashir Aamir Nazish Badar Muhammad Rashid Mehmood Nadia Nisar Rana Muhammad Suleman Shehzad Shaukat Salman Sharif Jaleel Kamran Syed Sohail Zahoor Zaidi Birjees Mazher Kazi Larisa Gubareva Xiyan Xu Rebecca Garten Alexander Klimov Molecular epidemiology of influenza A(H1N1)pdm09 viruses from Pakistan in 2009-2010.
description	<h4>Background</h4>In early 2009, a novel influenza A(H1N1) virus that emerged in Mexico and United States rapidly disseminated worldwide. The spread of this virus caused considerable morbidity with over 18000 recorded deaths. The new virus was found to be a reassortant containing gene segments from human, avian and swine influenza viruses.<h4>Methods/results</h4>The first case of human infection with A(H1N1)pdm09 in Pakistan was detected on 18(th) June 2009. Since then, 262 laboratory-confirmed cases have been detected during various outbreaks with 29 deaths (as of 31(st) August 2010). The peak of the epidemic was observed in December with over 51% of total respiratory cases positive for influenza. Representative isolates from Pakistan viruses were sequenced and analyzed antigenically. Sequence analysis of genes coding for surface glycoproteins HA and NA showed high degree of high levels of sequence identity with corresponding genes of regional viruses circulating South East Asia. All tested viruses were sensitive to Oseltamivir in the Neuraminidase Inhibition assays.<h4>Conclusions</h4>Influenza A(H1N1)pdm09 viruses from Pakistan form a homogenous group of viruses. Their HA genes belong to clade 7 and show antigenic profile similar to the vaccine strain A/California/07/2009. These isolates do not show any amino acid changes indicative of high pathogenicity and virulence. It is imperative to continue monitoring of these viruses for identification of potential variants of high virulence or drug resistance.
format	article
author	Uzma Bashir Aamir Nazish Badar Muhammad Rashid Mehmood Nadia Nisar Rana Muhammad Suleman Shehzad Shaukat Salman Sharif Jaleel Kamran Syed Sohail Zahoor Zaidi Birjees Mazher Kazi Larisa Gubareva Xiyan Xu Rebecca Garten Alexander Klimov
author_facet	Uzma Bashir Aamir Nazish Badar Muhammad Rashid Mehmood Nadia Nisar Rana Muhammad Suleman Shehzad Shaukat Salman Sharif Jaleel Kamran Syed Sohail Zahoor Zaidi Birjees Mazher Kazi Larisa Gubareva Xiyan Xu Rebecca Garten Alexander Klimov
author_sort	Uzma Bashir Aamir
title	Molecular epidemiology of influenza A(H1N1)pdm09 viruses from Pakistan in 2009-2010.
title_short	Molecular epidemiology of influenza A(H1N1)pdm09 viruses from Pakistan in 2009-2010.
title_full	Molecular epidemiology of influenza A(H1N1)pdm09 viruses from Pakistan in 2009-2010.
title_fullStr	Molecular epidemiology of influenza A(H1N1)pdm09 viruses from Pakistan in 2009-2010.
title_full_unstemmed	Molecular epidemiology of influenza A(H1N1)pdm09 viruses from Pakistan in 2009-2010.
title_sort	molecular epidemiology of influenza a(h1n1)pdm09 viruses from pakistan in 2009-2010.
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/51e3de8159754548a91206f0e3b517b9
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Molecular epidemiology of influenza A(H1N1)pdm09 viruses from Pakistan in 2009-2010.

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