In the early 1970s, Suffolk County created a mosquito pathogen surveillance in which they looked for a specific disease called Eastern equine encephalitis virus in mosquitoes. Pathogen surveillance was conducted using mosquito traps to monitor the presence of the virus at 12 different locations. [1].Another surveillance system that Long Island uses is Mark-Release-Recapture. This method is when scientists catch a specific species and mark it with an object or something that they visibly know that the certain animal was marked. They release the animal back into the wild and then recapture another sample. Lastly, scientists calculate the number of animals that are unmarked and marked and use that information to calculate the population hypothetically. [1]. Both of these methods were used by Suffolk County when they were trying to figure out and nullify the disease of EEEV. These methods are still being used today to study and record mosquito populations on Long Island. There are around 5