HomeMy WebLinkAboutArbovirus Report Massachusetts D*mmi-t00ent0f Public Health
Ai-b h-u0S0rveilUance Pi-*gi'a0NRepoft
Rep0ft Date: Oct0bet- 15, 2012
Key Public Risk Conimunication Messages foi, This Week:
l. The risk from mosquito-borne illness is considered to continue until an area has had a hard frost which will
result in the death of virtually all mosquitoes. A hard, or killing frost, is defined meteorologically as two
consecutive hours oftemperatures below 28degrees Fahrenheit, This will occur at different times for different
communities, and there may even be variation within communities based on local geography. Sources of
information to assist with determining when this has occurred can be found on the weather reports from your
local media Outlets and through the National Weather Service at
You may be aware of additional local resources that are available to you. Although mosquitoes are not killed until
a hard frost occurs, they are extremely unlikely to ba active when temperatures fall bo|ovx 50 degrees in the
evening, and you may wish to consider this information when making decisions about scheduling or cancelling!
planned outdoor events.
WNV and EEE Virus Surveillance Summary
Results contained in this i-eport reflect data inclusive of
MMWR Week 41 (Stinday, 10/7/12—Saturday, 10/13/12)
Mosquito Stirveillance
Numbei-of Mosquito Pools Tested 6790
Number of WNV Positive Pools 307
Number of EEE Positive Pools 267
Equine/Maninial Surveillance
Number of Mammal Speefinens Tested 21
Number of EEE Positive Hoi-ses 6*
Number of Hunian Speciniens Tested 881
Number of Human WNV Cases 24
Number of Human EEE Cases 7
Summary of 2012 Mosquito Pool Submissions
Berkshire Bristol Cape Central East Norfolk Northeast Plyrnouth Suffolk State
County County Cod MA Middlesex County MA County County Lai) Total
MCP MCP MCP MCP MCP MCP MCP MCP MCP Institute
Total I
1 226 420 281 929 294 628 1036 830 163 2083
Figure 1; Current WNV[Lisle Categories as described in Table 1 of the 2012 NIDPH Surveillance and Response Plan
Massachusetts WNV Fisk Categories
U
Current WNW Rlsk Level
Ae(Ae
Loan
w7nderase +�N,9
"'9 , f'6ective September 20,, 2012
ca cal
w.� „„.
Figure 2. Current EEE Risk Categories as described in Table 2 of the 2012. MDPH Surveillance and Response Plan
Current EEE,Risk
Euu
rr �Moderale
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Figure 3: Mosquito-Borne Illness(WNV,EEE)Risk Mal)
Mosquito-Borne Illness Risk Map
r ,
o.
Current Risk Level
Remote �.+��"•.r, i
Law
Moderrate.
"vjh , � ffective Septemiber 24, 2012
Useful Web Links:
MDPH Arbovirns Information- N11)[111 Arbovi ms Information Ros��rA )
MDPH Surveilla ltce and Response Plan: 2012 1 DPJ1 l b�'�vi os Surveillance Plan
Massachusetts Deparfilient of Public Health: k"w N:'ll � tM rwr r°aa e Ia �'Mc
Centers for Disease Control WNV VWehsite: CDC. WCA Nile Virus Home ajLc
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