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      浙江省豬群塞內卡病毒感染流行病學調查

      2 2022-11-02 14:03:12 張紅麗,王雅婷,黃靖等 《中國動物檢疫》2022年第10期

      為了解浙江省豬群塞內卡病毒(Senecavirus A,SVA)流行情況,2017—2020年開展了SVA血清學和病原學檢測。結果顯示:2018—2020年浙江省豬群SVA抗體個體陽性率分別為21.86%、9.83%、12.79%,群體陽性率分別為83.00%、56.06%、70.89%,整體呈波動狀變化趨勢;屠宰場平均個體陽性率為18.35%,高于養殖場(14.86%),差異明顯(P<0.01);浙南(19.13%)、浙北(17.01%)的平均個體陽性率顯著高于其他區域(10.09%~12.25%)。2017—2020年SVA核酸個體陽性率、群體陽性率總體呈下降趨勢,分別由2017年的18.08%、33.80%下降至2020年的1.66%、3.81%;屠宰場屠宰豬群的SVA核酸個體陽性率(8.72%)高于養殖場和無害化處理場病死豬群(3.97%),差異顯著(P<0.01);2018—2020年僅在浙南、浙北區域檢出SVA核酸陽性。結果表明:浙江省豬群SVA感染有所控制,但流行范圍依然較廣,部分區域豬群SVA隱性感染較嚴重,需重視并持續加強豬群SVA感染監測。

      Epidemiological Investigation on Infection with Swine Senecavirus A in Zhejiang Province

      In order to investigate the prevalence of swine Senecavirus A(SVA)in Zhejiang Province,serological and pathogenic detection of SVA was performed from 2017 to 2020. The results showed that,from 2018 to 2020,individual positive rates of SVA antibody were 21.86%,9.83% and 12.79%,respectively,the population ones were 83.00%,56.06% and 70.89%,respectively,with a fluctuating trend in general;the average individual positive rate in slaughterhouses was 18.35%,higher than that in farms(14.86%),with a significant difference(P<0.01);that in southern Zhejiang(19.13%)and northern Zhejiang(17.01%)was significantly higher than that in other regions(from 10.09% to 12.25%). From 2017 to 2020,the individual and population positive rates of SVA nucleic acid tended to decline in general,from 18.08% and 33.80% in 2017 to 1.66% and 3.81% in 2020,respectively. The individual positive rate of SVA nucleic acid in the pigs for slaughtering in slaughterhouses(8.72%)was significantly higher than that in the dead pigs in farms and rendering plants(3.97%),with significant difference(P<0.01);from 2018 to 2020,SVA nucleic acid was detected only in southern and northern Zhejiang. In conclusion,the infection with SVA was controlled in the province to some extent,although it was still widely spreading and recessive serious in some regions,which should be concerned to continuously strengthen monitoring the infection in pig population.

      原文鏈接:https://kns.cnki.net/kcms/detail/detail.aspx?dbcode=CJFD&dbname=CJFDAUTO&filename=ZGDW202210001&uniplatform=NZKPT&v=vPzqR5W2eDC67nUIvZgoLpyFgCGVrqh8CL6LQVWBW_D7GdZSldKTgLHj3eM349_o

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