Some protesters have refused free flu shots, citing a "government conspiracy," the Times said.
There is also the increased risk among the encampment of sexually transmitted diseases, said the doctor, Dr. Philip M. Tierno, Jr. of the NYU Langone Medical Center. And the site's pounding circles could lead to hearing damage.
Tierno compared conditions at the park to the pilgrimage to Mecca, in which entire groups of people have come down with respiratory infections in short period of time, and the communal compounds of the 1960s where sanitation problems and STDs cropped up.