Table 1. Susceptibility of small laboratory animals of various ages to fatal Thottapalayam virus meningoencephalitis*.

Host species	Age at injection, d	Illness onset, d	Mortality rate, %
Mus musculus	1	7	100
	5	7	100
	10	6	88
	14	6	94
	21	8	67
Meriones unguiculatus	1	9	100
	5	11	100
	11	7	80
	16	14	100
Peromyscus maniculatus	4	11	100
Monodelphis domestica	30	–	0

*Animals of various ages were injected intracerebrally with 6,000 PFU of Thottapalayam virus strain VRC-66412 and examined daily for neurologic signs and death.