In April, 1995, the second fatal case of hantavirus pulmonary syndrome
(HPS) occurred in the northeast in a New York State resident. Using t
he patient's lung tissue obtained at autopsy, the S genomic RNA segmen
t of a hantavirus, designated H-NY1, was amplified by reverse transcri
ptase-polymerase chain reaction (RT-PCR), cloned, and sequenced. The S
RNA was found to contain 2084 nucleotides, 6 nucleotides longer than
reported by Hjelle at al. (1995) for the virus associated with the fir
st northeastern case (RI-1). There were 101 nucleotide differences in
the S RNA between the H-NY1 and RI-1,which result in the prediction of
a single amino-acid change in the nucleocapsid (N) protein. Rodents w
ere trapped for serologic and virologic studies at the patient's resid
ence and work site. The whitefooted mouse (Peromyscus leucopus) was th
e most frequently captured species and more than 50% of those trapped
near the patient's residence showed serologic evidence of hantavirus i
nfection. Using RT-PCR it was possible to amplify hantavirus S RNA seq
uence from the Iu ng tissues of 8 out of 11 seropositive animals. No d
ifference in nucleotide sequence was found between the HPS patient seq
uence and the P. leucopus sequence (nucleotides 189 to 599). These dat
a are consistent with those of Hjelle et al. (1995) in suggesting that
P. leucopus is the primary rodent vector for the etiologic agent of H
PS in the northeastern United States. (C) 1996 Wiley-Liss, Inc.