Assessment of Serum Antibody Titers in Cattles and Buffaloes Post-Haemorrhagic septicaemia Outbreak in Aceh Singkil District, Indonesia

Haemorrhagic septicaemia (HS) is a significant disease in the ruminant industry in tropical countries. A vaccination program for HS has been implemented in Aceh, Indonesia; however, fatal cases are still frequently reported. This study aimed to determine the prevalence of HS based on the antibody titers in the area of HS outbreaks and to assess the coverage of ongoing vaccinations. One hundred seventeen blood samples from cattle and buffaloes in Aceh Singkil regency were collected purposively. To evaluate the serum samples, an enzyme-linked immunosorbent assay (ELISA) was used, and the results considered to be seropositive if the titer of the antibody was above 77 ELISA Units. The findings show that the overall seropositive of HS was 29.06%, and the vaccination coverage of the study area was only 22.22%. Hence, the vaccination program must be conducted continuously to control and prevent the disease.