ANIMAL HEALTH
From ANIMAL PEOPLE, December 1993:
A mystery hantavirus that killed 26 peopleear-
lier this year could spread across the U.S., the November 5
issue of Science warned. The Pulmonary Syndrome
Hantavirus, as it is now called, PSH for short, was traced
to deer mice after killing 19 people near the junction of
Arizona, New Mexico, Utah, and Colorado––and deer
mice range over most of North America. Cases have now
been confirmed as far north as Montana and the Dakotas,
as far west as coastal California, and as far east as
Louisiana. The southwestern outbreak may have occurred
as result of heavy rains in early 1992 that produced a
bumper crop of pinon nuts and grasshoppers, both staple
foods for deer mice, whose population exploded. The
Centers for Disease Control suspects the outbreak was
detected only because so many cases appeared at once.