Outbreak-associated Novel Duck Reovirus, China, 2011

that the prevalence of EBOV in these tested bat species is greater than that previously detected in E. helvum bats (1/262 serum samples) (1). The higher estimated prevalence in these species occurred despite the fact that E. helvum bats live in large colonies comprising several million animals, which make the species an ideal host for acute RNA virus infections. The relatively low seroprevalence of EBOV among E. helvum bats compared with that among sympatric species is contrary to our fi ndings for a lyssavirus and an uncharacterized henipavirus (3,4). Our results, therefore, lead us to question what factors (e.g., host, ecologic) limit EBOV circulation in straw-colored fruit bats. Virus isolation is required to characterize EBOVs circulating among fruit bats in Ghana, and additional testing, including longitudinal sampling of bats, is required to further investigate the epidemiology of EBOV in West Africa. Possible public health threats should also be investigated and addressed. These initial fi ndings, however, suggest that the risk for human infection with EBOV might be greater from bat-human contact in rural and forest settings than from urban-roosting E. helvum bats.