Clinical and Pathological Featuresof African Swine Fever in the First Outbreaks in Vietnam

Received: 20-05-2020

Accepted: 29-06-2020

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Issue: Vol. 18 No. 7 (2020)

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CHĂN NUÔI – THÚ Y – THỦY SẢN

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Nga, B., Phan, L., Dao, B., Son, N., Nam, N., & Lan, N. (2024). Clinical and Pathological Featuresof African Swine Fever in the First Outbreaks in Vietnam. Vietnam Journal of Agricultural Sciences, 18(7), 485–494. http://testtapchi.vnua.edu.vn/index.php/vjasvn/article/view/684

Clinical and Pathological Featuresof African Swine Fever in the First Outbreaks in Vietnam

Bui Thi To Nga (*) 1 , Le Van Phan 1 , Bui Tran Anh Dao 1 , Nguyen Vu Son 1 , Nguyen Huu Nam 1 , Nguyen Thi Lan 1

  • 1 Khoa Thú y, Học viện Nông nghiệp Việt Nam

    • Keywords

    African swine fever, clinical sign, pathology, pig

    Abstract


    This study was conducted on African Swine Fever (ASF) infected pigs from outbreaks in Hung Yen and Thai Binh provinces in February 2019. All pigs were tested positive for ASF virus by PCR method. The methods of investigation, autopsy and microscopic specimens were used to identify the clinical symptoms, gross and microscopic lesions of infected pigs. The results showed clinical symptoms of ASF pigs included high fever, loss of appetite, vomiting, skin hemorrhage, blood clotting abnormality, epistaxis and diarrhea. Severe hemorrhage was a gross lesion observed in different organs (lymph nodes, heart, kidney, stomach, intestines, gallbladder, bladder...). Hypertrophic spleen, black and purple hemorrhagic gastrointestinal lymph nodes and kidney lymph nodbaes were found in most cases. Microscopic lesions were marked lymphoid depletion in the spleen, lympho nodes and tosil, multi organic severe congestion and haemorrhages. It can be said that the first outbreaks of ASF in the North of Vietnam were produced by highly virulent strain and induced disease onset with peracute to acute disease course.

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