| point seroprevalence survey of ehrlichia ruminantium infection in small ruminants in the gambia. | using the map1-b enzyme-linked immunosorbent assay, we tested 1,318 serum samples collected from sheep and goats at 28 sites in the five divisions of the gambia to determine the ehrlichia ruminantium seroprevalence rates and to assess the risk for heartwater. about half (51.6%) of 639 sheep were positive, with seroprevalence rates per site varying between 6.9% and 100%. the highest seroprevalence was detected in the western part of the country (88.1% in the western division and 62.1% in the lowe ... | 2005 | 15817758 |