The northern salt marsh mosquito, Aedes vigilax, is the most important pest mosquito in the Top End because of its aggressive biting habits during the day and night. It can carry and transmit Ross River virus and Barmah Forest virus disease in the NT. You need to protect yourself to avoid being bitten. The highest risk period for these diseases is from December to March. Get the salt marsh mosquito pest calendar from the Department of Health Research and Publications Online digital repository.