Serological Comparisons Among Hart Park Virus and Strains of Flanders Virus

The antigenic relationships among Hart Park (HP) virus strain AR 70, Flanders virus strain 61-7484, and other related strains were investigated. Strains AR 70 and 61-7484 were shown to be antigenically related but different from each other in neutralization, complement fixation, and double-diffusion tests. Two strains isolated in Texas and one strain each, isolated in Illinois and Florida, appeared to be closely related if not identical to Flanders virus (61-7484) and antigenically related but different from HP virus AR 70. Ten additional strains isolated in 10 different states were compared t... Mehr ...