A serological study of severe fever with thrombocytopenia syndrome using a virus neutralization test and competitive enzyme-linked immunosorbent assay.
Severe fever with thrombocytopenia syndrome (SFTS) is caused by the SFTS virus (SFTSV). The SFTSV appears to have a wide host range, as SFTSV-positive ticks have been isolated from both farm animals and wild rodents. Therefore, it is important to monitor SFTSV-positive animals to prevent the transmission of SFTSV from animals to humans. Previously, we developed a competitive enzyme-linked immunosorbent assay (cELISA) to detect SFTSV-specific antibodies from field animals and compared the cELISA results to those from an indirect immunofluorescence assay (IFA). In this study, cELISA results were compared to and evaluated against the results from both an IFA and a virus neutralization (VN) test of 193 bovine serum samples (including two bovine positive control sera) and 70 horse serum samples. The consistency (98.9%) between cELISA and VN results was higher than that (97.4%) between cELISA and IFA for the bovine serum samples. Similarly, for the horse serum samples, the consistency (88.6%) between cELISA and VN results was higher than that (84.3%) between the cELISA and IFA. These findings indicate that our newly developed cELISA can be used for surveillance or epidemiological studies of SFTSV in animals.
Viral Disease Division, Animal and Plant Quarantine Agency, Gimcheon 39660, Korea.
Hyojin
H
Lee
Viral Disease Division, Animal and Plant Quarantine Agency, Gimcheon 39660, Korea.
Eun-Ju
EJ
Kim
Viral Disease Division, Animal and Plant Quarantine Agency, Gimcheon 39660, Korea.
In-Soo
IS
Cho
Viral Disease Division, Animal and Plant Quarantine Agency, Gimcheon 39660, Korea.
Jae-Young
JY
Song
Foreign Animal Disease Division, Animal and Plant Quarantine Agency, Gimcheon 39660, Korea.
Jeong Soo
JS
Choi
Foreign Animal Disease Division, Animal and Plant Quarantine Agency, Gimcheon 39660, Korea.
Ji Youn
JY
Lee
Viral Disease Division, Animal and Plant Quarantine Agency, Gimcheon 39660, Korea.
Yeun-Kyung
YK
Shin
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000175:diagnosis* / Q000821:virology; D004797:Enzyme-Linked Immunosorbent Assay / Q000662:veterinary*; D019084:Fluorescent Antibody Technique, Indirect / Q000662:veterinary*; D006734:Horse Diseases / Q000175:diagnosis* / Q000821:virology; D006736:Horses; D009500:Neutralization Tests / Q000662:veterinary*; D010217:Phlebotomus Fever / Q000175:diagnosis / Q000662:veterinary* / Q000821:virology; D016856:Phlebovirus / Q000302:isolation & purification*; D013921:Thrombocytopenia / Q000175:diagnosis / Q000662:veterinary / Q000821:virology
competitive enzyme-linked immunosorbent assay; severe fever with thrombocytopenia syndrome; virus neutralization test