{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,4,9]],"date-time":"2025-04-09T10:07:04Z","timestamp":1744193224373,"version":"3.37.3"},"reference-count":27,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2015,4,23]],"date-time":"2015-04-23T00:00:00Z","timestamp":1429747200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100003593","name":"Conselho Nacional de Desenvolvimento Cient\u00edfico e Tecnol\u00f3gico","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100003593","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100004901","name":"Funda\u00e7\u00e3o de Amparo \u00e0 Pesquisa do Estado de Minas Gerais","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100004901","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Influenza Resp Viruses"],"published-print":{"date-parts":[[2015,5]]},"abstract":"<jats:sec><jats:title>Background<\/jats:title><jats:p>Swine influenza virus (<jats:styled-content style=\"fixed-case\">SIV<\/jats:styled-content>) is the cause of an acute respiratory disease that affects swine worldwide. In <jats:styled-content style=\"fixed-case\">B<\/jats:styled-content>razil, <jats:styled-content style=\"fixed-case\">SIV<\/jats:styled-content> has been identified in pigs since 1978. After the emergence of pandemic <jats:styled-content style=\"fixed-case\">H<\/jats:styled-content>1<jats:styled-content style=\"fixed-case\">N<\/jats:styled-content>1 in 2009 (<jats:styled-content style=\"fixed-case\">H<\/jats:styled-content>1<jats:styled-content style=\"fixed-case\">N<\/jats:styled-content>1pdm09), few studies reported the presence of influenza virus in <jats:styled-content style=\"fixed-case\">B<\/jats:styled-content>razilian herds.<\/jats:p><\/jats:sec><jats:sec><jats:title>Objectives<\/jats:title><jats:p>The objective of this study was to evaluate the serological profile for influenza virus in farrow\u2010to\u2010finish pig farms in <jats:styled-content style=\"fixed-case\">M<\/jats:styled-content>inas <jats:styled-content style=\"fixed-case\">G<\/jats:styled-content>erais state, <jats:styled-content style=\"fixed-case\">B<\/jats:styled-content>razil.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Thirty farms with no <jats:styled-content style=\"fixed-case\">SIV<\/jats:styled-content> vaccination history were selected from the four larger pig production areas in <jats:styled-content style=\"fixed-case\">M<\/jats:styled-content>inas <jats:styled-content style=\"fixed-case\">G<\/jats:styled-content>erais state (<jats:styled-content style=\"fixed-case\">Z<\/jats:styled-content>ona da <jats:styled-content style=\"fixed-case\">M<\/jats:styled-content>ata, <jats:styled-content style=\"fixed-case\">T<\/jats:styled-content>ri\u00e2ngulo <jats:styled-content style=\"fixed-case\">M<\/jats:styled-content>ineiro\/<jats:styled-content style=\"fixed-case\">A<\/jats:styled-content>lto <jats:styled-content style=\"fixed-case\">P<\/jats:styled-content>arana\u00edba, <jats:styled-content style=\"fixed-case\">S<\/jats:styled-content>outh\/<jats:styled-content style=\"fixed-case\">S<\/jats:styled-content>outhwest and the <jats:styled-content style=\"fixed-case\">B<\/jats:styled-content>elo <jats:styled-content style=\"fixed-case\">H<\/jats:styled-content>orizonte metropolitan area). At each farm, blood samples were randomly collected from 20 animals in each production cycle category: breeding animals (sows and gilts), farrowing crate (2\u20133\u00a0weeks), nursery (4\u20137\u00a0weeks), grower pigs (8\u201314\u00a0weeks), and finishing pigs (15\u201316\u00a0weeks), with 100 samples per farm and a total of 3000 animals in this study. The samples were tested for hemagglutination inhibition activity against <jats:styled-content style=\"fixed-case\">H<\/jats:styled-content>1<jats:styled-content style=\"fixed-case\">N<\/jats:styled-content>1 pandemic strain (<jats:styled-content style=\"fixed-case\">A<\/jats:styled-content>\/swine\/<jats:styled-content style=\"fixed-case\">B<\/jats:styled-content>razil\/11\/2009) and <jats:styled-content style=\"fixed-case\">H<\/jats:styled-content>3<jats:styled-content style=\"fixed-case\">N<\/jats:styled-content>2 <jats:styled-content style=\"fixed-case\">SIV<\/jats:styled-content> (<jats:styled-content style=\"fixed-case\">A<\/jats:styled-content>\/swine\/<jats:styled-content style=\"fixed-case\">I<\/jats:styled-content>owa\/8548\u20102\/98) reference strain.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The percentages of seropositive animals for <jats:styled-content style=\"fixed-case\">H<\/jats:styled-content>1<jats:styled-content style=\"fixed-case\">N<\/jats:styled-content>1pdm09 and <jats:styled-content style=\"fixed-case\">H<\/jats:styled-content>3<jats:styled-content style=\"fixed-case\">N<\/jats:styled-content>2 were 26\u00b723% and 1\u00b757%, respectively, and the percentages of seropositive herds for both viruses were 96\u00b76% and 13\u00b72%, respectively.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>The serological profiles differed for both viruses and among the studied areas, suggesting a high variety of virus circulation around the state, as well as the presence of seronegative animals susceptible to influenza infection and, consequently, new respiratory disease outbreaks.<\/jats:p><\/jats:sec>","DOI":"10.1111\/irv.12304","type":"journal-article","created":{"date-parts":[[2015,2,3]],"date-time":"2015-02-03T16:33:09Z","timestamp":1422981189000},"page":"161-167","source":"Crossref","is-referenced-by-count":9,"title":["Distribution of antibodies against influenza virus in pigs from farrow\u2010to\u2010finish farms in <scp>M<\/scp>inas <scp>G<\/scp>erais state, <scp>B<\/scp>razil"],"prefix":"10.1111","volume":"9","author":[{"given":"Alessandra S.","family":"Dias","sequence":"first","affiliation":[{"name":"Laborat\u00f3rio de Pesquisa em Virologia Animal Departamento de Medicina Veterin\u00e1ria Preventiva Universidade Federal de Minas Gerais Belo Horizonte MG Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"\u00c9rica A.","family":"Costa","sequence":"additional","affiliation":[{"name":"Laborat\u00f3rio de Pesquisa em Virologia Animal Departamento de Medicina Veterin\u00e1ria Preventiva Universidade Federal de Minas Gerais Belo Horizonte MG Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Daniela S.","family":"Raj\u00e3o","sequence":"additional","affiliation":[{"name":"Virus and Prion Disease of Livestock Research Unit USDA\u2010ARS Ames IA USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Roberto M. 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