FILE PHOTO OF PRAIRIE DOGS AT THEIR PEN IN WASHINGTON NATIONAL ZOO.
Public health officials in three states tried on June 9, 2003 to track down
pet prairie dogs believed to be spreading a smallpox-like illness, not seen
before in the Western Hemisphere, that may have infected 37 people. Six
people were being treated in hospitals, officials said, and they were
expected to recover with bed rest. A pair of prairie dogs are pictured on
display at the Washington National Zoo on April 15, 2003 in this file photo.
NO RIGHTS CLEARANCES OR PERMISSIONS ARE REQUIRED FOR THIS IMAGE REUTERS/Hyungwon Kang