Military hygiene staffers spray disinfectants to a passing car en route during a comprehensive anti-epidemics operation in Hongbai Township, Shifang City, southwest China's Sichuan Province, May 20, 2008. Beginning on Monday, the Ministry of Health has dispatched 500 more health and epidemic prevention workers each day for five days to the quake-ridden areas, and 1,000 health supervisors would be deployed by May 23, and no major outbreak of epidemic diseases or other public health threats had been reported in the quake-stricken areas as of 9 p.m. Monday.