Epi Week #34 - 2017 General Statements

August 20 – August 26

Massachusetts has confirmed 200 WNV-positive mosquito pools this season, with WNV activity in every single mainland county in the state. There are a total of 105 towns and cities in 11 counties at MODERATE risk for WNV. We continue to see a high amount of WNV activity statewide, even as we round out a dry August with cooler nighttime temperatures. EEEv activity remains low though Culiseta melanura numbers have recovered to pre-drought levels.

Weather

There was limited precipitation in Berkshire County and in the north-central part of the state this past week, otherwise most of the state received little rain.

Precipitation in MA for EPI Week 34, 2017

As this report goes to press, we are ending Epi Week 35 with little rain and cool nighttime temps. Expect remnants of Hurricane Harvey to pass by over Labor Day weekend, bringing showers to some parts of the state. Our weather expert is also keeping a wary eye on Hurricane Irma, but says it’s too soon to tell if it will impact us.