Table 3. Serologic screening by immunofluorescent antibody assay for Haantan virus and Puumala virus antibodies in rodents, Vladivostok, Russia^a.

Rodent species	No. of sera tested	Positives by IFA (%)
		HTNV	PUUV
Apodemus peninsulae	70	4(5.7)	0
A. agrarius	39	1(2.5)	0
Clethrionomys rufocanus	8	1(12.5	1(12.5)
Microtus fortis	3	0	0
Tamias sibiricus	2	0	0
Total	122	6(4.9)	1(0.8)

^aAbbreviations used: IFA, immunofluorescent antibody assay; HTNV, Haantan virus; PUUV, Puumala virus.