Study on the situation of lympy skin disease on buffalo and cow in some provinces in the North central region

Abstract

A total of 1,166 samples were collected from buffaloes and cows with lumpy skin disease
(LSD) clinical symptoms and epidemiology in the areas of the provinces from Thanh Hoa to Quang Tri during the period from December 2020 to April 2021 for testing, detecting the presence of LSD virus by realtime-PCR technique. The studied results showed that there were 1,048 samples positive with LSD virus (Capripoxvirus), accounting for 89.88%. There was a
significant difference (p<0.05) on the positive sample rate among the sample types, in which
the positive skin scale sample rate with LSD virus were the highest (96.86%), higher than the
positive blood sample rate (86.69%) and mixed sample rate (83.73%).
The surveyed result on the situation of LSD in the provinces from Thanh Hoa to Quang Tri
showed that the disease has appeared in Quang Tri province since December 2020. From December 12, 2020 to April 30, 2021, the epidemic has spread to 71 districts, towns and cities, with 897 communes and wards of these provinces. The number of died and destroyed animals were 3,934 from a total of 35,064 animals, accounting for 11.22%. The result of clinical epidemiological study also showed that in the study areas there were 170 buffaloes infected with LSD, accounting for 0.48% of the total number of the infected buffaloes and cows, there were 34,889 cows infected with LSD, accounting for 99.50%. The rate of buffaloes and cows infected with LSD was 2.19% of the herd total. The rate of died and destroyed animals was 2.2% of the herd total in the localities suffering with the LSD epidemic, the weight of destroyed animals was 528,409 kg. The study also showed that 644,667 buffaloes and cows were vaccinated, reaching 40.37%