The Winthrop Board of Health has voted unanimously to cancel the Mosquito spraying in parts of Winthrop this Thursday. There is no current indication for adulticide spraying, as evening biting virus vector species are currently low and no virus has been detected locally. Rigorous testing is being performed, and breeding grounds are being treated with larviciding. The current surge in mosquitos in certain areas originates from the surrounding marshlands and is composed mainly of day time flying salt marsh species which are not virus vectors and for which post-sunset adulticiding is not effective. The current risk in Winthrop for WNV is moderate. Town-wide spraying will be performed only if the risk level is elevated.
If you have any concerns, please attend the next BoH meeting on August 14 at 6 pm at Town Hall, at which Mosquito monitoring and mitigation are discussed.