Molecular epidemiology and genetic characterization of influenza B virus in Lebanon during 2016-2018

Copyright © 2019 Elsevier B.V. All rights reserved..

BACKGROUND: Influenza B viruses are a major cause of serious acute respiratory infections in humans.

METHODS: Nasopharyngeal swabs were collected from subjects with influenza-like illness during October 2016-June 2018 and screened for influenza A and B. The hemagglutinin (HA) and neuraminidase (NA) genes of the Lebanese influenza B specimens were sequenced and phylogenetically compared with the vaccine strains and specimens from the Eastern Mediterranean Region and Europe.

RESULTS: Influenza A and B viruses co-circulated between October and May and peaked between January and March. During the 2016-2017 season, A/H3N2 (33.4%) and B/Yamagata (29.7%) were the predominantly circulating viruses followed by B/Victoria and A/H1N1pdm09 viruses. During the 2017-2018 season, A/H3N2 (31.5%) and A/H1Npdm09 (29.3%) were most prevalent with co-circulation of B/Yamagata and to a lesser extent B/Victoria viruses. The B/Yamagata specimens belonged to clade-3 while the B/Victoria belonged to clade-1A. None of the analyzed specimens had a mutation known to confer resistance to NA inhibitors (NAIs).

CONCLUSION: Multiple subtypes of influenza co-circulate each year in Lebanon with a peak between January and March. The trivalent vaccine included a B/Victoria strain which mismatched the B/Yamagata lineage that predominated during the study period, highlighting the importance of quadrivalent vaccines.

Medienart:

E-Artikel

Erscheinungsjahr:

2019

Erschienen:

2019

Enthalten in:

Zur Gesamtaufnahme - volume:75

Enthalten in:

Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases - 75(2019) vom: 15. Nov., Seite 103969

Sprache:

Englisch

Beteiligte Personen:

AlIbrahim, Malak [VerfasserIn]
Assaf-Casals, Aia [VerfasserIn]
Massaad, Elie [VerfasserIn]
Shaker, Rouba [VerfasserIn]
Soudani, Nadia [VerfasserIn]
Fayad, Danielle [VerfasserIn]
Chamseddine, Sarah [VerfasserIn]
Lteif-Khoury, Mireille [VerfasserIn]
Chmaisse, Ahmad [VerfasserIn]
Isaac, Imad [VerfasserIn]
Anan, Hind [VerfasserIn]
Sadaka, Christian [VerfasserIn]
Radwan, Najwa [VerfasserIn]
Ghanem, Soha [VerfasserIn]
Naous, Amal [VerfasserIn]
Karam, Maria [VerfasserIn]
Andary, Rabih [VerfasserIn]
Dbaibo, Ghassan [VerfasserIn]
Zaraket, Hassan [VerfasserIn]

Links:

Volltext

Themen:

Hemagglutinins
Influenza
Influenza Vaccines
Journal Article
Lebanon
Phylogenetic analysis
Research Support, Non-U.S. Gov't
Surveillance
Vaccination

Anmerkungen:

Date Completed 20.04.2020

Date Revised 20.04.2020

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.meegid.2019.103969

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM299380580