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Seroepidemiological evidence of severe fever with thrombocytopenia syndrome virus infections in wild boars in Nagasaki, Japan.

Hayasaka D, Fuxun Y, Yoshikawa A, Posadas-Herrera G, Shimada S, Tun MM, Agoh M, Morita K - Trop Med Health (2016)

Bottom Line: SFTS is endemic to Nagasaki in western Japan; however, epidemiological information regarding SFTSV in Nagasaki is not known.SFTSV seropositive animals were found in three areas.Our findings provide epidemiological information on the distribution of SFTSV in Nagasaki.

View Article: PubMed Central - PubMed

Affiliation: Department of Virology, Institute of Tropical Medicine (NEKKEN), Nagasaki University, 1-12-4 Sakamoto, Nagasaki, 852-8523 Japan ; Leading Graduate School Program, Nagasaki University, 1-12-4 Sakamoto, Nagasaki, 852-8523 Japan.

ABSTRACT
Severe fever with thrombocytopenia syndrome (SFTS) is an emerging disease in East Asia. It is thought that the SFTS virus (SFTSV) circulates between ticks and animals in nature and that the virus is transmitted to humans by tick bites. SFTS is endemic to Nagasaki in western Japan; however, epidemiological information regarding SFTSV in Nagasaki is not known. In this study, we performed SFTSV IgG ELISAs and neutralization antibody assays for a seroepidemiological survey using samples from wild boars captured in six areas of Nagasaki. SFTSV seropositive animals were found in three areas. Our findings provide epidemiological information on the distribution of SFTSV in Nagasaki.

No MeSH data available.


Related in: MedlinePlus

OD values after IgG ELISA of the serum samples of wild boars caught in the six areas of the Nagasaki prefecture. The y-axis indicates the OD values calculated by subtracting each of the OD value of the sample with the negative antigen (RVFV antigen) from the OD value of the same sample with the positive antigen (SFTSV antigen). OD cutoff value was 0.2
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Fig2: OD values after IgG ELISA of the serum samples of wild boars caught in the six areas of the Nagasaki prefecture. The y-axis indicates the OD values calculated by subtracting each of the OD value of the sample with the negative antigen (RVFV antigen) from the OD value of the same sample with the positive antigen (SFTSV antigen). OD cutoff value was 0.2

Mentions: The serum samples of wild boars were first examined by indirect IgG ELISA for the detection of past infection with SFTSV. Wild boars with IgG seropositive samples were detected in four out of the six study areas in Nagasaki prefecture (Fig. 2). The IgG seropositive rates were 51, 25, 0, 19, 0, and 1.4 % in Nagasaki, Omura, Sasebo, Matsuura, Tsushima, and Kamigoto, respectively (Fig. 2).Fig. 2


Seroepidemiological evidence of severe fever with thrombocytopenia syndrome virus infections in wild boars in Nagasaki, Japan.

Hayasaka D, Fuxun Y, Yoshikawa A, Posadas-Herrera G, Shimada S, Tun MM, Agoh M, Morita K - Trop Med Health (2016)

OD values after IgG ELISA of the serum samples of wild boars caught in the six areas of the Nagasaki prefecture. The y-axis indicates the OD values calculated by subtracting each of the OD value of the sample with the negative antigen (RVFV antigen) from the OD value of the same sample with the positive antigen (SFTSV antigen). OD cutoff value was 0.2
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

License 1 - License 2
Show All Figures
getmorefigures.php?uid=PMC4940765&req=5

Fig2: OD values after IgG ELISA of the serum samples of wild boars caught in the six areas of the Nagasaki prefecture. The y-axis indicates the OD values calculated by subtracting each of the OD value of the sample with the negative antigen (RVFV antigen) from the OD value of the same sample with the positive antigen (SFTSV antigen). OD cutoff value was 0.2
Mentions: The serum samples of wild boars were first examined by indirect IgG ELISA for the detection of past infection with SFTSV. Wild boars with IgG seropositive samples were detected in four out of the six study areas in Nagasaki prefecture (Fig. 2). The IgG seropositive rates were 51, 25, 0, 19, 0, and 1.4 % in Nagasaki, Omura, Sasebo, Matsuura, Tsushima, and Kamigoto, respectively (Fig. 2).Fig. 2

Bottom Line: SFTS is endemic to Nagasaki in western Japan; however, epidemiological information regarding SFTSV in Nagasaki is not known.SFTSV seropositive animals were found in three areas.Our findings provide epidemiological information on the distribution of SFTSV in Nagasaki.

View Article: PubMed Central - PubMed

Affiliation: Department of Virology, Institute of Tropical Medicine (NEKKEN), Nagasaki University, 1-12-4 Sakamoto, Nagasaki, 852-8523 Japan ; Leading Graduate School Program, Nagasaki University, 1-12-4 Sakamoto, Nagasaki, 852-8523 Japan.

ABSTRACT
Severe fever with thrombocytopenia syndrome (SFTS) is an emerging disease in East Asia. It is thought that the SFTS virus (SFTSV) circulates between ticks and animals in nature and that the virus is transmitted to humans by tick bites. SFTS is endemic to Nagasaki in western Japan; however, epidemiological information regarding SFTSV in Nagasaki is not known. In this study, we performed SFTSV IgG ELISAs and neutralization antibody assays for a seroepidemiological survey using samples from wild boars captured in six areas of Nagasaki. SFTSV seropositive animals were found in three areas. Our findings provide epidemiological information on the distribution of SFTSV in Nagasaki.

No MeSH data available.


Related in: MedlinePlus