Investigates the control and the spread of mosquitoes through surveillance of mosquito breeding areas, preventing the development of adult mosquitoes, trapping adult mosquitoes, responding to complaints, treating infested areas and testing the trapped mosquitoes for presence of disease. Also Nassau County DOH investigates all reported animal bites. Nassau County Public Health law requires that pets be vaccinated against rabies. This includes, but is not limited to, dogs, cats, and ferrets. Medical providers treating a person who has suffered an animal bite are required to report the incident to the Department. To report a bite incident, please call 516-227-9663 during normal business hours or 516-742-6154 after business hours and on weekends. The department will answer all questions regarding rabies, raccoons, bats, ticks and more. Please report any sick or strange-acting mammals (except small rodents) observed at any time to the Nassau County Department of Health. Call for detailed information.