FOR IMMEDIATE RELEASE                              Connecticut Department of Public Health

August 16, 2011                                                         Contact: William Gerrish

                                                                                   (860) 509-7270


                                                                                    Connecticut Agricultural Experiment Station

                                                                                    Contact: Dr. Theodore Andreadis

                                                                                    (203) 974-8510



HartfordThe State Mosquito Management Program today announced that mosquitoes trapped in three new towns on August 3 and 4, 2011 have tested positive for West Nile virus (WNV). These results represent the first positive mosquitoes identified in Cromwell, Milford, and Norwalk by the Connecticut Agricultural Experiment Station (CAES) this year.


In 2011, WNV-positive mosquitoes have been trapped in 19 municipalities: Bridgeport, Cromwell, Danbury, Darien, Easton, Fairfield, Greenwich, Hamden, Litchfield, Milford, New Britain, New Canaan, Norwalk, Orange, Stamford, Stratford, Trumbull, Westport, and Woodbridge. No Connecticut residents have been identified with illnesses related to WNV infections this year. In 2010, WNV-positive mosquitoes were trapped in 24 municipalities with 11 reported human cases.


“As expected, we continue to find mosquitoes infected with West Nile virus in additional locations in lower Fairfield County as well as other areas of Connecticut and previously identified sites,” said Dr. Theodore G. Andreadis, Chief Medical Entomologist, CAES. “During the remainder of August and through September, we expect to see further build-up of West Nile virus with increased risk for human infection throughout the state, especially in densely populated communities.”


The state uses a network of 91 mosquito-trapping stations in 72 municipalities maintained by the CAES to monitor WNV activity. Mosquito traps are set Monday – Thursday nights and conducted at each site every ten days on a rotating basis. Mosquitoes are grouped (pooled) for testing according to species, collection site, and date. Each pool is tested for the presence of viruses of public health importance. Positive findings are reported to local health departments, in press releases, and on the CAES web site at


For information on West Nile virus and what you can do to prevent getting bitten by mosquitoes, visit the Connecticut Mosquito Management Program Web site at