Pioneer Valley MCD Weekly Report
EPI Week 31 Week Ending: August 3, 2024
Surveillance Summary
EPI Week 31 Target Species Surveillance Summary | Cumulative Totals: EPI Weeks 24-31 |
Species | # Collected | Pools | WNV+ | EEEV+ | Cumulative Specimens | Cumulative Pools | Cumulative WNV+ | Cumulative EEEV+ |
Cx. pipiens/restuans | 28 | 2 | 0 | 0 | 1189 | 43 | 1 | 0 |
Cs. melanura | 6 | 3 | 0 | 0 | 128 | 16 | 0 | 0 |
Cq. perturbans | 437 | 17 | 0 | 0 | 15419 | 151 | 1 | 0 |
Oc. canadensis | 5 | 0 | 0 | 0 | 561 | 20 | 0 | 0 |
Oc. japonicus | 66 | 4 | 0 | 0 | 423 | 23 | 0 | 0 |
Cx. salinarius | 12G | 8 | 1 | 0 | 678 | 18 | 2 | 0 |
Ae. albopictus | 8 | 1 | 0 | 0 | 15 | 2 | 0 | 0 |
Ps. ferox | 62 | 2 | 0 | 0 | 296 | 6 | 0 | 0 |
An. quadrimaculatus | 29 | 1 | 0 | 0 | 544 | 2 | 0 | 0 |
Ae. vexans | 82 | 4 | 0 | 0 | 214 | 5 | 0 | 0 |
Cx. erraticus | 114 | 2 | 0 | 0 | 265 | 3 | 0 | 0 |
Totals | 966 | 44 | 1 | 0 | 19732 | 289 | 4 | 0 |
Positive Mosquito Samples
- There was one WNV positve pool of Cx. salinarius (50) found in West Springfield during EPI week 31.
Most Abundant Species
- Cq. perturbans were the most abundant vector species collected during EPI week 31, totaling 437 specimens. Perturbans collections are down by 28% from the previous week and are expected to continue to decrease during the coming weeks. Cq. perturbans are a bridge vector for EEE and WNV and can be found in permanent swamps with emergent vegetation (e.g. cattails and hummocks/tussocks). Cq. perturbans are aggressive human biters that can fly up to 5 miles for a blood meal and are active during the night.
EPI WK 31 Summary by County
- Franklin County
- EPI WK 31 Pools Tested: 16
- Positive Samples: 0
- Most Abundant Species: Cq. perturbans
(265)
- Total Mosquitoes Collected: 541
- Hampden County
- EPI WK 31 Pools Tested: 16
- Positive Samples: 1
- Most Abundant Species: Cx. erraticus (114)
- Total Mosquitoes Collected: 406
- Hampshire County
- EPI WK 31 Pools Tested: 12
- Positive Samples: 0
- Most Abundant Species: Cq. perturbans
(105)
- Total Mosquitoes Collected: 233
- Total Mosquitoes Collected (All Counties): 1549
- Total Pools Submitted for Testing (All Counties): 59
Weather Data
Weather Summary
- Weather conditions remained favorable for mosquitoes during EPI week 31, resulting in a total of 1,180 mosquitoes collected, which is a 24% decrease from the previous week. Due to the phenology (seasonal abundance) of specific species, it is expected that mosquito collection totals will continue to decrease in the coming weeks, despite favorable weather conditions.
Weekly Changes in Weather
Station | Name | EPI Week | PRCP Total (in.) | TMAX AVG (°F) | TMIN AVG (°F) |
USC00190120 | AMHERST, MA US | 24 | 0.57 | 75.43 | 54.14 |
USC00190120 | AMHERST, MA US | 25 | 1.7G (+214%) | 84.71 (+12%) | 61.14 (+13%) |
USC00190120 | AMHERST, MA US | 26 | 1.64 (-8%) | 81.86 (-3%) | 5G.14 (-3%) |
USC00190120 | AMHERST, MA US | 27 | 2.08 (+28%) | 81.71 (no change) | 58.2G (+1%) |
USC00190120 | AMHERST, MA US | 28 | 1.5 (-28%) | 8G (+G%) | 6G.G (+20%) |
USC00190120 | AMHERST, MA US | 2G | 1.8G (+26%) | 87.14 (-2%) | 64.43 (-8%) |
USC00190120 | AMHERST, MA US | 30 | 0.64 (-66%) | 81.71 (-6%) | 62 (-4%) |
USC00190120 | AMHERST, MA US | 31 | 1.22 (+G1%) | 84.43 (+3%) | 64.57 (+4%) |
Statewide Arbovirus Detections as of 8/G/24
Collection Date | Town | Species | Pool Size | County | Pool Size | Virus |
6/25/2024 | Quincy | Culex pipiens/restuans | 36 | Norfolk | 36 | WNV |
6/25/2024 | Quincy | Culex pipiens/restuans | 25 | Norfolk | 25 | WNV |
7/1/2024 | Carver | Culiseta melanura | 50 | Plymouth | 50 | EEE |
7/1/2024 | Carver | Culiseta melanura | 50 | Plymouth | 50 | EEE |
7/1/2024 | Carver | Culiseta melanura | 50 | Plymouth | 50 | EEE |
7/1/2024 | Carver | Culiseta melanura | 34 | Plymouth | 34 | EEE |
7/1/2024 | Carver | Coquillettidia perturbans | 50 | Plymouth | 50 | EEE |
7/1/2024 | Carver | Coquillettidia perturbans | 50 | Plymouth | 50 | EEE |
7/2/2024 | Rockland | Culex pipiens/restuans | 50 | Plymouth | 50 | WNV |
7/8/2024 | Kingston | Culex pipiens/restuans | 50 | Plymouth | 50 | EEE |
7/8/2024 | Halifax | Culiseta melanura | 50 | Plymouth | 50 | EEE |
7/9/2024 | Raynham | Culiseta melanura | 50 | Bristol | 50 | WNV |
7/9/2024 | Blackstone | Culex pipiens/restuans | 24 | Worcester | 24 | WNV |
7/9/2024 | Edgartown | Culex pipiens/restuans | 22 | Dukes | 22 | WNV |
7/9/2024 | Cambridge | Culex pipiens/restuans | 50 | Middlesex | 50 | WNV |
7/9/2024 | Hanson | Culiseta melanura | 50 | Plymouth | 50 | WNV |
7/11/2024 | Clinton | Culex pipiens/restuans | 20 | Worcester | 20 | WNV |
7/11/2024 | Natick | Culex pipiens/restuans | 50 | Middlesex | 50 | WNV |
7/15/2024 | Carver | Culiseta melanura | 50 | Plymouth | 50 | EEE |
7/15/2024 | East Longmeadow | Culex salinarius | 5 | Hampden | 5 | WNV |
7/16/2024 | Dracut | Coquillettidia perturbans | 50 | Middlesex | 50 | WNV |
7/16/2024 | Wayland | Culex pipiens/restuans | 34 | Middlesex | 34 | WNV |
7/16/2024 | Middleborough | Culex pipiens/restuans | 50 | Plymouth | 50 | WNV |
7/16/2024 | Middleborough | Culex pipiens/restuans | 50 | Plymouth | 50 | WNV |
7/16/2024 | Scituate | Culex pipiens/restuans | 49 | Plymouth | 49 | WNV |
7/16/2024 | Pembroke | Culex pipiens/restuans | 31 | Plymouth | 31 | WNV |
7/17/2024 | Fairhaven | Culex pipiens/restuans | 22 | Bristol | 22 | WNV |
7/17/2024 | Dartmouth | Culex pipiens/restuans | 37 | Bristol | 37 | WNV |
7/18/2024 | Seekonk | Coquillettidia perturbans | 50 | Bristol | 50 | WNV |
7/18/2024 | Seekonk | Culiseta melanura | 31 | Bristol | 31 | WNV |
7/19/2024 | Richmond | Culex pipiens/restuans | 21 | Berkshire | 21 | WNV |
7/19/2024 | Attleboro | Culex pipiens/restuans | 23 | Bristol | 23 | WNV |
7/19/2024 | Worcester | Culex pipiens/restuans | 19 | Worcester | 19 | WNV |
7/19/2024 | Worcester | Culex pipiens/restuans | 50 | Worcester | 50 | WNV |
7/19/2024 | Marlborough | Culex pipiens/restuans | 50 | Middlesex | 50 | WNV |
7/22/2024 | Haverhill | Culex pipiens | 50 | Essex | 50 | WNV |
7/22/2024 | Haverhill | Culex pipiens | 50 | Essex | 50 | WNV |
7/22/2024 | Haverhill | Culex pipiens | 41 | Essex | 41 | WNV |
7/22/2024 | Brookline | Culex pipiens/restuans | 50 | Norfolk | 50 | WNV |
7/22/2024 | Kingston | Culex pipiens/restuans | 37 | Plymouth | 37 | WNV |
7/22/2024 | Carver | Culiseta melanura | 50 | Plymouth | 50 | EEE |
7/22/2024 | Carver | Culiseta melanura | 50 | Plymouth | 50 | EEE |
7/22/2024 | Carver | Culiseta melanura | 50 | Plymouth | 50 | EEE |
7/22/2024 | Carver | Coquillettidia perturbans | 50 | Plymouth | 50 | EEE |
7/22/2024 | Carver | Coquillettidia perturbans | 50 | Plymouth | 50 | EEE |
7/23/2024 | Easton | Culiseta melanura | 24 | Bristol | 24 | WNV |
7/23/2024 | Norton | Culex pipiens/restuans | 44 | Bristol | 44 | WNV |
7/23/2024 | Barnstable | Culex pipiens/restuans | 50 | Barnstable | 50 | EEE |
7/23/2024 | Quincy | Culex pipiens/restuans | 50 | Norfolk | 50 | WNV |
7/23/2024 | Braintree | Culex pipiens/restuans | 50 | Norfolk | 50 | WNV |
7/23/2024 | Quincy | Culex pipiens/restuans | 50 | Norfolk | 50 | WNV |
7/23/2024 | Westwood | Coquillettidia perturbans | 50 | Norfolk | 50 | WNV |
7/23/2024 | Avon | Culex pipiens/restuans | 16 | Norfolk | 16 | WNV |
7/23/2024 | Holyoke | Coquillettidia perturbans | 50 | Hampden | 50 | WNV |
7/23/2024 | Abington | Culex pipiens/restuans | 50 | Plymouth | 50 | WNV |
7/23/2024 | Abington | Culex pipiens/restuans | 50 | Plymouth | 50 | WNV |
7/23/2024 | Abington | Culex pipiens/restuans | 50 | Plymouth | 50 | WNV |
7/23/2024 | Brockton | Culex pipiens/restuans | 50 | Plymouth | 50 | WNV |
7/23/2024 | Brockton | Culex pipiens/restuans | 50 | Plymouth | 50 | WNV |
7/23/2024 | Brockton | Culex pipiens/restuans | 50 | Plymouth | 50 | WNV |
7/23/2024 | Bridgewater | Culex pipiens/restuans | 50 | Plymouth | 50 | WNV |
7/23/2024 | Whitman | Culex pipiens/restuans | 50 | Plymouth | 50 | WNV |
7/23/2024 | Whitman | Culex pipiens/restuans | 50 | Plymouth | 50 | WNV |
7/23/2024 | Whitman | Culex pipiens/restuans | 50 | Plymouth | 50 | EEE |
7/23/2024 | Whitman | Culex pipiens/restuans | 50 | Plymouth | 50 | WNV |
7/23/2024 | Whitman | Culex pipiens/restuans | 50 | Plymouth | 50 | WNV |
7/23/2024 | Whitman | Culex pipiens/restuans | 50 | Plymouth | 50 | WNV |
7/23/2024 | Whitman | Culex pipiens/restuans | 50 | Plymouth | 50 | WNV |
7/23/2024 | Whitman | Culex pipiens/restuans | 50 | Plymouth | 50 | WNV |
7/23/2024 | Whitman | Culex pipiens/restuans | 50 | Plymouth | 50 | WNV |
7/23/2024 | Whitman | Culex pipiens/restuans | 50 | Plymouth | 50 | WNV |
7/23/2024 | Whitman | Culex pipiens/restuans | 50 | Plymouth | 50 | WNV |
7/23/2024 | Abington | Culex pipiens/restuans | 50 | Plymouth | 50 | EEE |
7/23/2024 | Abington | Culex pipiens/restuans | 50 | Plymouth | 50 | WNV |
7/23/2024 | Abington | Culex pipiens/restuans | 50 | Plymouth | 50 | WNV |
7/23/2024 | Halifax | Culex pipiens/restuans | 50 | Plymouth | 50 | WNV |
7/23/2024 | Rockland | Culex pipiens/restuans | 50 | Plymouth | 50 | WNV |
7/23/2024 | Rockland | Culex pipiens/restuans | 50 | Plymouth | 50 | WNV |
7/23/2024 | Rockland | Culex pipiens/restuans | 50 | Plymouth | 50 | WNV |
7/23/2024 | Rockland | Culex pipiens/restuans | 50 | Plymouth | 50 | WNV |
7/23/2024 | Rockland | Culex pipiens/restuans | 50 | Plymouth | 50 | WNV |
7/23/2024 | Middleborough | Culiseta melanura | 50 | Plymouth | 50 | EEE |
7/23/2024 | Middleborough | Culex salinarius | 50 | Plymouth | 50 | EEE |
7/23/2024 | Middleborough | Culiseta melanura | 50 | Plymouth | 50 | EEE |
7/23/2024 | Middleborough | Culiseta melanura | 50 | Plymouth | 50 | EEE |
7/23/2024 | Middleborough | Coquillettidia perturbans | 50 | Plymouth | 50 | EEE |
7/23/2024 | Middleborough | Coquillettidia perturbans | 50 | Plymouth | 50 | EEE |
7/23/2024 | Middleborough | Culiseta melanura | 43 | Plymouth | 43 | EEE |
7/23/2024 | Boston | Culex pipiens/restuans | 37 | Suffolk | 37 | WNV |
7/23/2024 | Boston | Ochlerotatus japonicus | 9 | Suffolk | 9 | WNV |
7/23/2024 | Boston | Culex pipiens/restuans | 41 | Suffolk | 41 | WNV |
7/23/2024 | Boston | Culex pipiens/restuans | 19 | Suffolk | 19 | WNV |
7/23/2024 | Boston | Culex pipiens/restuans | 50 | Suffolk | 50 | WNV |
7/23/2024 | Boston | Culex pipiens/restuans | 50 | Suffolk | 50 | WNV |
7/23/2024 | Boston | Culex pipiens/restuans | 28 | Suffolk | 28 | WNV |
7/23/2024 | Boston | Culex pipiens/restuans | 50 | Suffolk | 50 | WNV |
7/23/2024 | Boston | Culex pipiens/restuans | 39 | Suffolk | 39 | WNV |
7/24/2024 | Fairhaven | Culex pipiens/restuans | 38 | Bristol | 38 | WNV |
7/24/2024 | New Bedford | Culex pipiens/restuans | 23 | Bristol | 23 | WNV |
7/24/2024 | Bedford | Culex pipiens/restuans | 43 | Middlesex | 43 | WNV |
7/24/2024 | Burlington | Culex pipiens/restuans | 29 | Middlesex | 29 | WNV |
7/24/2024 | East Longmeadow | Culex pipiens/restuans | 10 | Hampden | 10 | WNV |
7/24/2024 | Woburn | Culex pipiens/restuans | 50 | Middlesex | 50 | WNV |
7/25/2024 | Swansea | Culex pipiens/restuans | 19 | Bristol | 19 | WNV |
7/25/2024 | Marlborough | Culex pipiens/restuans | 39 | Middlesex | 39 | WNV |
7/25/2024 | Worcester | Culex pipiens/restuans | 50 | Worcester | 50 | WNV |
7/25/2024 | Worcester | Culex pipiens/restuans | 50 | Worcester | 50 | WNV |
7/25/2024 | Medfield | Culiseta melanura | 51 | Norfolk | 51 | WNV |
7/25/2024 | Dover | Culiseta melanura | 43 | Norfolk | 43 | WNV |
7/26/2024 | Grafton | Culex pipiens/restuans | 50 | Worcester | 50 | WNV |
7/29/2024 | Saugus | Culex pipiens | 35 | Essex | 35 | WNV |
7/29/2024 | Middleborough | Culex salinarius | 50 | Plymouth | 50 | WNV |
7/29/2024 | Kingston | Culiseta melanura | 10 | Plymouth | 10 | EEE |
7/30/2024 | Norton | Culex pipiens/restuans | 50 | Bristol | 50 | WNV |
7/30/2024 | Falmouth | Culex pipiens/restuans | 31 | Barnstable | 31 | WNV |
7/30/2024 | Framingham | Culex pipiens/restuans | 50 | Middlesex | 50 | WNV |
7/30/2024 | Quincy | Culex pipiens/restuans | 15 | Norfolk | 15 | WNV |
7/30/2024 | Quincy | Culex pipiens/restuans | 53 | Norfolk | 53 | WNV |
7/30/2024 | Dedham | Culex pipiens/restuans | 50 | Norfolk | 50 | EEE |
7/30/2024 | Dedham | Culex pipiens/restuans | 36 | Norfolk | 36 | EEE |
7/30/2024 | Holbrook | Culex pipiens/restuans | 23 | Norfolk | 23 | WNV |
7/30/2024 | Haverhill | Coquillettidia perturbans | 50 | Essex | 50 | EEE |
7/30/2024 | Haverhill | Coquillettidia perturbans | 50 | Essex | 50 | WNV |
7/30/2024 | Amesbury | Coquillettidia perturbans | 25 | Essex | 25 | EEE |
7/30/2024 | Wareham | Culex pipiens/restuans | 50 | Plymouth | 50 | WNV |
7/30/2024 | Wareham | Culex pipiens/restuans | 50 | Plymouth | 50 | EEE |
7/30/2024 | Rochester | Culex pipiens/restuans | 50 | Plymouth | 50 | WNV |
7/30/2024 | Rochester | Culex pipiens/restuans | 50 | Plymouth | 50 | WNV |
7/30/2024 | Rochester | Culex pipiens/restuans | 50 | Plymouth | 50 | WNV |
7/30/2024 | Rochester | Culex pipiens/restuans | 50 | Plymouth | 50 | WNV |
7/30/2024 | Rochester | Culex pipiens/restuans | 50 | Plymouth | 50 | WNV |
7/30/2024 | Middleborough | Culex pipiens/restuans | 50 | Plymouth | 50 | WNV |
7/30/2024 | Cohasset | Culex pipiens/restuans | 50 | Norfolk | 50 | WNV |
7/30/2024 | Cohasset | Culex pipiens/restuans | 50 | Norfolk | 50 | WNV |
7/30/2024 | Marshfield | Culex pipiens/restuans | 50 | Plymouth | 50 | WNV |
7/30/2024 | Marshfield | Culex pipiens/restuans | 50 | Plymouth | 50 | WNV |
7/30/2024 | Hingham | Culex pipiens/restuans | 50 | Plymouth | 50 | WNV |
7/30/2024 | Pembroke | Culex pipiens/restuans | 50 | Plymouth | 50 | WNV |
7/30/2024 | Duxbury | Culex pipiens/restuans | 50 | Plymouth | 50 | WNV |
7/30/2024 | Boston | Culex pipiens/restuans | 8 | Suffolk | 8 | WNV |
7/30/2024 | Boston | Culex pipiens/restuans | 11 | Suffolk | 11 | WNV |
7/31/2024 | New Bedford | Culex pipiens/restuans | 10 | Bristol | 10 | WNV |
7/31/2024 | Dartmouth | Culex pipiens/restuans | 50 | Bristol | 50 | WNV |
7/31/2024 | Dennis | Culiseta melanura | 6 | Barnstable | 6 | WNV |
7/31/2024 | Lowell | Culex pipiens/restuans | 12 | Middlesex | 12 | WNV |
7/31/2024 | Burlington | Culex salinarius | 50 | Middlesex | 50 | WNV |
7/31/2024 | Franklin | Culex pipiens/restuans | 38 | Norfolk | 38 | WNV |
7/31/2024 | Bellingham | Culex pipiens/restuans | 41 | Norfolk | 41 | WNV |
7/31/2024 | West Springfield | Culex salinarius | 50 | Hampden | 50 | WNV |
7/31/2024 | Boston | Culiseta melanura | 7 | Suffolk | 7 | WNV |
8/1/2024 | Seekonk | Culiseta melanura | 50 | Bristol | 50 | WNV |
8/1/2024 | Seekonk | Coquillettidia perturbans | 33 | Bristol | 33 | WNV |
8/1/2024 | Dennis | Culiseta melanura | 15 | Barnstable | 15 | WNV |
8/1/2024 | Westborough | Culex pipiens/restuans | 9 | Worcester | 9 | WNV |
8/1/2024 | Worcester | Culex pipiens/restuans | 34 | Worcester | 34 | WNV |
8/2/2024 | North Attleborough | Culex pipiens/restuans | 37 | Bristol | 37 | WNV |
8/2/2024 | Worcester | Culex pipiens/restuans | 28 | Worcester | 28 | WNV |
8/5/2024 | Saugus | Culex salinarius | 20 | Essex | 20 | WNV |
8/5/2024 | Revere | Culex pipiens | 10 | Suffolk | 10 | WNV |
8/5/2024 | Easton | Culiseta melanura | 50 | Bristol | 50 | WNV |
8/5/2024 | Carver | Culiseta melanura | 17 | Plymouth | 17 | EEE |
8/5/2024 | Carver | Coquillettidia perturbans | 50 | Plymouth | 50 | EEE |
8/5/2024 | Carver | Coquillettidia perturbans | 50 | Plymouth | 50 | EEE |
8/5/2024 | Carver | Coquillettidia perturbans | 30 | Plymouth | 30 | EEE |
8/6/2024 | Yarmouth | Culex pipiens/restuans | 19 | Barnstable | 19 | WNV |
8/6/2024 | Falmouth | Culex pipiens/restuans | 13 | Barnstable | 13 | WNV |
8/6/2024 | Melrose | Culex pipiens/restuans | 50 | Middlesex | 50 | WNV |
8/6/2024 | Melrose | Culex pipiens/restuans | 17 | Middlesex | 17 | WNV |
8/6/2024 | Melrose | Culex pipiens/restuans | 43 | Middlesex | 43 | WNV |
8/6/2024 | Stoneham | Culex pipiens/restuans | 10 | Middlesex | 10 | WNV |
8/6/2024 | Wakefield | Culex pipiens/restuans | 50 | Middlesex | 50 | WNV |
8/6/2024 | Wakefield | Culex pipiens/restuans | 24 | Middlesex | 24 | WNV |
8/6/2024 | Newburyport | Culex pipiens | 4 | Essex | 4 | WNV |
8/6/2024 | Boston | Culex pipiens/restuans | 40 | Suffolk | 40 | WNV |
8/6/2024 | Boston | Culex pipiens/restuans | 31 | Suffolk | 31 | WNV |
8/6/2024 | Boston | Culex pipiens/restuans | 20 | Suffolk | 20 | WNV |
8/6/2024 | Chelsea | Culex pipiens/restuans | 36 | Suffolk | 36 | WNV |
8/6/2024 | Boston | Culex pipiens/restuans | 50 | Suffolk | 50 | WNV |
8/7/2024 | Woburn | Culex pipiens/restuans | 22 | Middlesex | 22 | WNV |
Statewide Cumulative Arbovirus Positives as of 8/G/24
Virus | Positive Mosquito Samples | Animal Cases | Human Cases |
EEEv | 34 | 1 | 0 |
WNV | 145 | 0 | 1 |
Note: A human case of WNV (meningitis/neuroinvasive) occurred in Hampden County, while a horse contracted EEE in Plymouth County – both of which were confirmed on 8/6/24.
EEE Impacted Areas
A recently confirmed animal case of EEEv in a single horse has resulted in a risk level change to “High” in the following communities: Carver, Middleborough, and Plymouth.
Current EEE Risk Map from: https://www.mass.gov/info-details/massachusetts-arbovirus-update
WNV Impacted Areas
Detections of WNV in mosquitos and a single confirmed human case (Hampden County) during the past week has
resulted in a risk level change to “Moderate” in the following communities: Agawam, Barnstable, Bellingham, Cambridge, Chicopee, Cohasset, Dennis, Dracut, Duxbury, East Bridgewater, Falmouth, Franklin, Halifax, Hampden, Hanover, Hingham, Holyoke, Lakeville, Longmeadow, Lowell , Marshfield, Mashpee, Melrose, Methuen, Milton, Newton, North Attleboro, Plainville, Rochester, Springfield, Stoneham, Wakefield, Wareham, West Springfield, Watertown, Whitman, Wilbraham, Wrentham, and Yarmouth.
Current WNV Risk Map From: https://www.mass.gov/info-details/massachusetts-arbovirus-update
Dengue Fever in Massachusetts (acquired through travel)
- According to the CDC, there have been a total of 72 human cases of dengue in Massachusetts, as of 8/9/24. There have been no local transmissions of dengue in Massachusetts.
- Dengue transmission typically occurs in the following regions: the Caribbean, Central America, South America, Southeast Asia, and the Pacific Islands.
- Dengue is spread through a human-to-mosquito-to-human cycle.
- Onset is up to two weeks with illness lasting 2-7 days. Transmission to mosquitoes is possible for up to 12 days.
- Symptoms include:
- Fever
- Nausea and vomiting
- Rash
- Aches and pains
- Joint and muscle pain
- Pressure and pain around the eye sockets
- Headache
WNV and EEE Symptoms Chart
Disease | Onset | Symptoms |
WNV | 2 to 14 Days | Febrile Illness - Fever
- Muscle aches
- Joint Pain
- Fatigue
- Rash
| Neuroinvasive Disease - Stiff neck
- Muscle Tremors
- Seizures
- Changes in vision
- Weakness or paralysis
|
EEE | 4 to 10 Days | Febrile Illness - Fever
- Muscle aches
- Joint pain
- Chills
| Neuroinvasive Disease - Fever
- Headache
- Seizures
- Behavioral changes
- Vomiting
- Diarrhea
- Coma
|
PE Poster Printouts and Helpful Links
Recommended Public Messaging
- Use EPA approved bug-repellent
- Cover skin/wear long sleeves and pants
- Avoid outdoor activities during peak mosquito times (between dusk and dawn)
- Repair window screens
- Containers in yards with standing water should be emptied to reduce mosquito breeding
DPH Arbovirus Toolkit: https://www.mass.gov/lists/arbovirus-information-for-local-boards-of-health#toolkit- DPH Arbovirus Response Plan: https://www.mass.gov/doc/2024-arbovirus-surveillance-and-response-
Questions/Comments: Please email John Briggs, the District Director, at john.c.briggs@mass.gov.