Seroprevalence of Swine Influenza A Virus (swIAV) Infections in Commercial Farrow-to-Finish Pig Farms in Greece

被引：1

作者：

Papatsiros, Vasileios G. ^{[1
]}

Papakonstantinou, Georgios I. ^{[1
]}

Meletis, Eleftherios ^{[2
]}

Koutoulis, Konstantinos ^{[3
]}

Athanasakopoulou, Zoi ^{[4
]}

Maragkakis, Georgios ^{[1
]}

Labronikou, Georgia ^{[5
]}

Terzidis, Ilias ^{[5
]}

Kostoulas, Polychronis ^{[2
]}

Billinis, Charalambos ^{[4
]}

机构：

[1] Univ Thessaly, Fac Vet Med, Clin Med, Kardhitsa 43100, Greece

[2] Univ Thessaly, Fac Publ & One Hlth, Kardhitsa 43100, Greece

[3] Univ Thessaly, Fac Vet Sci, Sch Hlth Sci, Dept Poultry Dis, Kardhitsa 43100, Greece

[4] Univ Thessaly, Fac Vet Med, Dept Microbiol & Parasitol, Kardhitsa 43100, Greece

[5] Hipra Hellas SA, Swine Tech Support, Athens 10441, Greece

来源：

VETERINARY SCIENCES | 2023年 / 10卷 / 10期

关键词：

pigs; swine influenza virus; antibodies; seroprevalence; Greece; RESPIRATORY-DISEASE; EUROPEAN SWINE; H1N1; EPIDEMIOLOGY; TRANSMISSION; ANTIBODIES; EVOLUTION; SURVEILLANCE; VACCINATION; PREVALENCE;

D O I：

10.3390/vetsci10100599

中图分类号：

S85 [动物医学（兽医学）];

学科分类号：

0906 ;

摘要：

Simple Summary Our study aimed to assess the seroprevalence of Swine Influenza Viruses (swIAVs) in commercial pig farms in Greece. A total of 1416 blood samples were collected from breeding animals (gilts and sows) and pigs aged 3 weeks to market age from 40 different swIAV vaccinated and unvaccinated commercial farrow-to-finish pig farms. Of the total 1416 animals sampled, 498 were seropositive, indicating that the virus circulates in both vaccinated (54% seroprevalence) and unvaccinated Greek pig farms (23% seroprevalence). In addition, maternally derived antibody (MDA) levels in pigs at 4 and 7 weeks of age were lower in unvaccinated farms than in vaccinated farms. In conclusion, our results underscore the importance of vaccination for the prevention of swIAV infections in commercial farrow-to-finish pig farms.Abstract Swine influenza is a highly contagious respiratory disease caused by influenza A virus infection. Pigs play an important role in the overall epidemiology of influenza because of their ability to transmit influenza viruses of avian and human origin, which plays a potential role in the emergence of zoonotic strains with pandemic potential. The aim of our study was to assess the seroprevalence of Swine Influenza Viruses (swIAVs) in commercial pig farms in Greece. A total of 1416 blood samples were collected from breeding animals (gilts and sows) and pigs aged 3 weeks to market age from 40 different swIAV vaccinated and unvaccinated commercial farrow-to-finish pig farms. For the detection of anti-SIV antibodies, sera were analyzed using an indirect ELISA kit CIVTEST SUIS INFLUENZA (R), Hipra (Amer, Spain). Of the total 1416 animals tested, 498 were seropositive, indicating that the virus circulates in both vaccinated (54% seroprevalence) and unvaccinated Greek pig farms (23% seroprevalence). In addition, maternally derived antibody (MDA) levels were lower in pigs at 4 and 7 weeks of age in unvaccinated farms than in vaccinated farms. In conclusion, our results underscore the importance of vaccination as an effective tool for the prevention of swIAV infections in commercial farrow-to-finish pig farms.

引用

页数：12

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