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First Report of Influenza D Virus in Dairy Cattle in Pakistan

文献类型： 外文期刊

作者： Umar, Sajid 1 ; Ahmed, Aftab 3 ; Gulraiz, Sajjad Hussain 4 ; Muhammad, Shaban 1 ; Yu, Jieshi 5 ; Rasool, Arslan 6 ; Koviazina, Renata 1 ; Yilmaz, Aysun 7 ; Yilmaz, Huseyin 7 ; Anderson, Benjamin D. 8 ;

作者机构： 1.Duke Kunshan Univ, Global Hlth Res Ctr GHRC, Suzhou 215316, Peoples R China

2.Duke Kunshan Univ, Div Nat & Appl Sci DNAS, Suzhou 215316, Peoples R China

3.Friesland Campina Engro Pakistan Ltd, Karachi 75600, Pakistan

4.Punjab Agr & Meat Co PAMCO, Lahore 54000, Pakistan

5.Guangdong Acad Agr Sci, Agrobiol Gene Res Ctr, State Key Lab Swine & Poultry Breeding Ind, Guangzhou 510640, Peoples R China

6.Huazhong Agr Univ, Coll Food Sci & Technol, Wuhan 430070, Peoples R China

7.Istanbul Univ Cerrahpasa, Vet Fac, Dept Virol, TR-35500 Istanbul, Buyukcekmece, Turkiye

8.Univ Florida, Coll Publ Hlth & Hlth Profess, Dept Environm & Global Hlth, Gainesville, FL 32610 USA

关键词： influenza D virus; cattle; RT-PCR; phylogeny; Pakistan

期刊名称：VIRUSES-BASEL （ 影响因子：3.5； 五年影响因子：3.7 ）

ISSN：

年卷期： 2024 年 16 卷 12 期

页码：

收录情况： SCI

摘要： Influenza D virus (IDV) is a newly emerged zoonotic virus increasingly reported worldwide. Cattle are considered the main reservoir of IDV, although it was first isolated from pigs. IDV infects multiple animal species and contributes to the bovine respiratory disease complex (BRDC). To date, there has been no report on the presence and frequency of IDV among cattle herds in Pakistan. In this study, we collected nasal swabs from cattle and performed virological surveillance of IDV via qRT-PCR. Among 376 swab samples, IDV was detected in 9 samples (2.4%). Four dairy cattle farms were positive for IDV; two IDV-positive samples (two/nine, 22.2%) belonged to asymptomatic cattle, while seven IDV-positive samples (seven/nine, 77.8%) were from cattle showing respiratory clinical signs, including two with a recent history of abortion and mastitis. Partial sequences of the hemagglutinin-esterase-fusion gene of IDV were obtained from nine qRT-PCR-positive samples. Notably, all IDV strains in this study clustered within the D/OK lineages in phylogenetic analysis. A 98.8-99.6% genetic identity to its European and US counterparts indicates that the IDVs are closely related. The D/OK lineage of IDV was previously unreported in Pakistan. This is the first report of IDV in Pakistan. We confirmed that IDV is circulating among cattle herds in Pakistan. This study underscores the importance of virological surveillance to monitor the ecology of IDV for better animal and public health. The continued spread of IDV and its adaptation to various hosts necessitate further epidemiological studies.

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