Seroprevalence of Q fever, Brucellosis and Bluetongue in selected provinces in Lao PDR
Douangngeun B., Theppangna W., Soukvilay V., Senaphanh C., Phithacthep K., Phomhaksa S., Yingst S., Lombardini EL., Hansson E., Selleck PW., Blacksell SD.
This study has determined the proportional sero-positivity of two zoonotic diseases, Q fever and brucellosis, and bluetongue virus which is non-zoonotic, in five provinces of Lao PDR (Loungphabang, Luangnumtha, Xayaboury and Xiengkhouang, Champasak, Vientiane province and Vientiane capital) A total of 1089 samples from buffalo, cattle, pigs and goats were tested, with sero-positivity of bluetongue virus (96.7%), Q fever (1.2%) and brucellosis (0.3%). The results of this survey indicated that Q fever sero-positivity is not widely distributed in Lao PDR however Xayaboury province had a cluster of seropositive cattle in seven villages in four districts (Botan, Kenthao, Paklaiy and Phiang) that share a border with Thailand. Further studies are required to determine if Xayaboury province is indeed an epidemiological hotspot of Q fever activity. There is an urgent need to determine the levels of economic loss and human health-related issues caused by Q fever, brucellosis and bluetongue virus in Lao PDR.