Intermediate and transport hosts of XXXX in Costa Rica.

@entity19 @entity1573 @entity281 @entity35 @entity468 @entity3204
@entity3204 was isolated from 3.5% of 202 @entity19 , 12.5% of 120 @entity35 , 16% of 106 sparrows (Zonotrichia capensis), and from 54% of 50 @entity1573 from Costa Rica. The infection rate in @entity1573 increased from 23% in those weighing less than 500 g, to 73% in those between 500 and 1,000 g, indicating a rapid rate of acquiring infectin, probably from the soil in which they constantly search for food. No isolates were made from Musca domestica, or from four genera of roaches caught in the wild. However, @entity3204 was isolated from four of 16 lots of earthworms. Most strains of @entity3204 isolated from Costa Rican @entity468 produced chronic @entity281 in @entity19 . However, even when infected with virulent strains, @entity19 died at a time when numerous bradyzoites had been formed. Also, the availability of bradyzoites in @entity1573 8-10 days after ingestion of oocysts was comparable to that in @entity19 . Therefore, several infected prey species are available as intermediate hosts to @entity468 , providing the bradyzoites essential for the shedding of large numbers of oocysts. The isolation of @entity3204 from earthworms or the soil associated with them illustrates their possible role as transport hosts to infect @entity1573 and other birds feeding on them. The possible role of other transport hosts could not be confirmed.
