Laboratory studies with wild rodents and viruses native to Trinidad. II. Studies with the Trinidad Caraparu-like agent TRVL 34053-1

ABSTRACT

Trinidad virus TRVL 34053-1, belonging in group C and closely related to Caraparu virus, was shown to circulate in the blood of naturally and experimentally infected Oryzomys laticeps velutinus. All seven experimental animals circulated virus; the maximum virus level observed in their serum was 5.8 dex LD50 for adult mice inoculated intracerebrally with 0.03 ml. Studies with 80 experimentally infected animals, 40 Oryzomys and 40 Zygodontomys b. brevicauda, showed that hemagglutination-inhibiting (HI), complement-fixing and neutralizing antibodies persisted for about 2 months after birth and neutralising antibodies persisted for about 1 month longer. (Summary)