Equine influenza outbreak in Eastern of Algeria in 2021: The first introduction of Florida Clade 1 to Maghreb area

IF 2 3区农林科学 Q4 IMMUNOLOGY

Comparative Immunology Microbiology and Infectious Diseases Pub Date : 2023-12-04 DOI:10.1016/j.cimid.2023.102109

Hadda Kareche , José-Carlos Valle-Casuso , Anthony Madeline , Delphine Froger , Fanny Lecouturier , Gaëlle Gonzalez , Abdelaali Debbi , Saber Taqiyeddine Benseghir , Abdelkrim Mohamed Nasri , Moundher Boureghda , Abdelhamid Achouri , Farouk Laabassi

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引用次数: 0

Abstract

We have performed an equine influenza (EI) serological study of the equine population in Algeria by testing 298 serum samples collected between February and August 2021 from 5 provinces. The results were obtained performing an NP-ELISA. Our results revealed that 49.3% (147/298) samples positive for antibodies to EI (H3N8). During this study and after a gap of one decade an outbreak of EI was reported in Algeria in the first week of March 2021. The disease was confirmed by virus detection from the nasal swabs (n = 39) by qRT-PCR and by identifying 5 EI seroconversion. The virus sequences were identified as H3N8 by sequencing the haemagglutinin (HA) and neuraminidase (NA) genes. Alignment of HA1 amino acid sequence confirmed that viruses belong to Clade 1 of the Florida sublineage in the American lineage. This study indicate the first detection of FC1 strain of EIV in Maghreb area.

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2021年阿尔及利亚东部马流感暴发:佛罗里达1型进化分支病毒首次传入马格里布地区

我们通过检测2021年2月至8月期间从5个省收集的298份血清样本，对阿尔及利亚的马种群进行了马流感(EI)血清学研究。结果采用NP-ELISA法测定。结果显示，49.3%(147/298)的样本中EI (H3N8)抗体阳性。在本研究期间，经过十年的间隔，于2021年3月的第一周在阿尔及利亚报告了一次EI暴发。采用qRT-PCR方法从鼻拭子(n = 39)中检测到病毒，并鉴定5种EI血清转化，确诊为该病。通过对血凝素(HA)和神经氨酸酶(NA)基因的测序，鉴定该病毒序列为H3N8。HA1氨基酸序列的比对证实该病毒属于美国谱系中佛罗里达亚谱系的进化支1。本研究为马格里布地区首次检出EIV FC1株。

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来源期刊

Comparative Immunology Microbiology and Infectious Diseases 医学-免疫学

CiteScore

4.60

自引率

0.00%

发文量

102

审稿时长

40 days

期刊介绍： Comparative Immunology, Microbiology & Infectious Diseases aims to respond to the concept of "One Medicine" and to provide a venue for scientific exchange. Based on the concept of "Comparative Medicine" interdisciplinary cooperation between specialists in human and animal medicine is of mutual interest and benefit. Therefore, there is need to combine the respective interest of physicians, veterinarians and other health professionals for comparative studies relevant to either human or animal medicine . The journal is open to subjects of common interest related to the immunology, immunopathology, microbiology, parasitology and epidemiology of human and animal infectious diseases, especially zoonotic infections, and animal models of human infectious diseases. The role of environmental factors in disease emergence is emphasized. CIMID is mainly focusing on applied veterinary and human medicine rather than on fundamental experimental research.