Equine seroprevalence for Venezuelan equine encephalitis virus (VEEV) in the Mexican Gulf States of Tamaulipas, Veracruz, and Tabasco, 2003–2004.

aResults based on IgM and IgG ELISA; this assay was only performed on equine sera collected from the State of Tamaulipas.bResults based on hemaglutination-inhibition (HI) assay.cResults based on plaque reduction neutralization test (PRNT); titers ≥1∶20 were considered positive.a. 检测结果基于IgM与IgG酶联免疫吸附试验（Enzyme-Linked Immunosorbent Assay，ELISA）；该检测仅针对从塔毛利帕斯州采集的马血清开展。 b. 检测结果基于血凝抑制（Hemagglutination Inhibition，HI）试验。 c. 检测结果基于空斑减少中和试验（Plaque Reduction Neutralization Test，PRNT）；滴度≥1∶20时判定为阳性。