Epi Week #30 - 2017 General Statements

July 23 – July 29

We have now had 29 WNV-positive mosquito pools in in the state, including several in and around the Boston area, a region of the state known to be a hotspot for this virus. Given current trends in mosquito populations and regular rain events, it is likely WNV levels will continue to build. Culiseta melanura levels also remain lower than average, and there have been no EEV+ pools found. To put this into perspective, during this Epi Week in 2012 (the last time a wide-area aerial adulticide treatment was performed), there were already more than 55 EEEv+ pools confirmed in the state.

Weather

Most of the state received at least one inch of rain this week, with the exception of the southeast and Cape Cod and the Islannds (and a tiny northwest portion of Berkshire County). Looks like South Suburban Boston received the bulk of the precipitation, topping out at 1.86 inches

Precipitation in MA for EPI Week 30, 2017

As this report goes to press, we are starting August with hot, humid weather punctuated by scattered thunderstorms. Expect higher than average temperatures and precipitation for Epi Week 32.