Studies on infectivity of Trichinella isolates to mice

Infectivity of Trichinella from swine and dog,and the international standard Trichinella isolates: T.spiralis and T.nativa in mice was compared in Heilongjiang province, China.It was found that infectivity of 4 Trichinella isolates in mice was significantly different.Swine isolate and T.spiralis were highly infective to mice with Reproductive Capacity Indexes(RCI)of 121.01 and 149.86 respectively,however,mice were relatively refractory to dog isolate and T.nativa with RCIs of 60.89 and 55.15 respectively.On the basis of the results,it is concluded that Trichinella from swine and dog in Heilongjiang province, China belong to Trichinella spiralis and Trichinella nativa respectively.