NEW YORK — The scent of death mixed with the dust rising from the cold, damp sump of the ruined World Trade Center, overtaxing the cadaver dogs nosing the rubble for human remains and stirring fears of public health hazards in weeks to come.
Medical authorities and public health experts Saturday discounted the risk of a major epidemic or serious disease outbreak in New York, but warned that medical dangers and emotional hazards for rescue workers will only worsen as buried bodies decay.
Medical experts are contending not just with the risk of virulent infections from rotting bodies. They must also guard against the possibility that the wreckage may have been sown with lethal microbes as an additional act of terrorism. That fear, at least, is rapidly fading as the days wear on with no sign of an outbreak, several medical forensic experts said.
"We would have known by now if there were any potential biotoxins or chemical toxins left by the hijackers of the planes in canisters or whatever with time releases," said medical forensic expert Dr. Cyril H. Wecht, chair of the department of pathology at the Central Medical Center and Hospital in Pittsburgh.
But other fears linger.
So much blood may have been spilled by casualties in the collapse of the two 110-story towers Tuesday that the risk of HIV contamination, while low, must be considered, urban search and rescue officials in Los Angeles and New York said. The raw sewage from broken building pipes also heightens the risk of infections, several disaster relief experts said.
Even so, many workers ignored pleas to wear masks or take other precautions as they searched for any trace of the 4,972 people still unaccounted for after Tuesday's terrorist attack.
By late Saturday, 152 bodies and 400 body parts had been recovered, officials said.
Only 20,000 tons of the skyscrapers' estimated 1.25 million tons of debris has been removed so far.
Baked for days in the hot sun, soaked by rain and now chilled by autumnal breezes, the wreckage of the World Trade Center has become a giant petri dish for potential contagions, public health experts said. But the ready availability of major hospitals, trained medical personnel and potable water makes the actual risk of any outbreak remote.
"The primary concern that people have is whether or not the unburied remains are going to pose a danger of an epidemic of infectious disease," said Dr. Steven Rottman, director of UCLA's Center for Public Health and Disaster Relief. "The experience [in other major disasters] has been that they do not pose any danger of an epidemic."
