Tình hình nhiễm virus gây dịch tiêu chảy cấp ở lợn mắc bệnh thể cận lâm sàng

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Tác giả: Thị Ngân Mai, Ngọc Thạch Phạm, Thị Lan Hương Phạm

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Khoa học kỹ thuật Thú y, 2023

Mô tả vật lý: tr.5

Bộ sưu tập: Metadata

ID: 342018

Thêm vào giỏ Liên kết toàn văn

Dịch tiêu chảy cấp ở lợn (Porcine Epidemic Diarhea - PED) là bệnh truyền nhiễm cấp tính do PED virus (PEDV), họ Coronaviridae gây ra. Lợn 8 đến 12 tuần tuổi thường mắc bệnh ở thể cận lâm sàng. Do đó, phát hiện sớm trại có lợn mắc bệnh thể cận lâm sàng bằng kỹ thuật chẩn đoán nhanh là rất cần thiết cho công tác phòng chống bệnh. Đã tiến hành thu thập từ 13-20 mẫu phân/trại và gộp mẫu để xác định tình trạng nhiễm PEDV ở cấp độ trại tại một số tỉnh miền Bắc bằng phương pháp RT-LAMP. Kết quả nghiêncứu cho thấy, xét nghiệm PEDV từ 1 hoặc 2 mẫu gộp ở mỗi trại là hiệu quả về thời gian và kinh phí trong việc xác định nhanh tình trạng nhiễm PEDV ở cấp độ trại. Tỷ lệ nhiễm PEDV ở lợn nhiễm bệnh thể cận lâm sàng tại một số tỉnh miền Bắc trung bình là 38,2%
thực trạng này làm tăng nguy cơ lây nhiễm chéo PEDV giữa các trại trong quá trình vận chuyển lợn. Đây là cơ sở cho việc thiết kế, thực hiện các chương trình giám sát nhằm hạn chế nguy cơ lây lan PEDV từ lợn nhiễm bệnh thể cận lâm sàng.Porcine epidemic diarrhea (PED) is an acute infectious disease caused by the PED virus (PEDV), a member of the Coronaviridae family. The pigs at 8 to 12 weeks of age are normally infected with PED in subclinical situation. Therefore, early identifying the pigs suffering with PED in the subclinical situation in farm by the rapid diagnostic method is very essential for PEDV prevention and control. In this study, 13-20 fecal samples per farm were collected and pooled to determine PEDV infection at farm level in some Northern provinces by RT-LAMP method. The studied results showed that testing PEDV from 1 or 2 pooled samples per farm was effective in quickly identifying PEDV infection at the farm level. The average infection rate of pig with PEDV in subclinical situation in some Northern provinces was 38.2%, this circumstance might increase the risk of PEDV crosscontamination between the farms during the pig movement and transportation. This outcome will provide information for the design and implementation of surveillance programs to reduce the risk of PEDV spread from subclinically infected pigs.

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