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Thursday, February 2, 2023

Mosquito Pools Positive for West Nile Virus

Contributed by St. Bernard Parish Government

This is to inform the public that the Louisiana Animal Disease Diagnostic Laboratory has confirmed two of our mosquito samples positive for West Nile Encephalitis (WNV). 

Samples were collected in the Chalmette area between Judge Perez Highway to the North, Highway 47 to the East, West St. Bernard Highway (Hwy 46) to the South, and Jackson Boulevard to the West on Aug. 9.

In accordance with the Expanded Transmission Protocol, we are suggesting the following:

• The location described will serve as the epicenter from which inspection, sampling, and control efforts will radiate.

• Personnel will be assigned to inspect the immediate area surrounding the epicenter and to continue outward for an approximate five city block area depending upon the geographic location, the topography, and the surrounding conditions. The purpose of the search will be to locate vector mosquito (the Southern House Mosquito and/or the Asian Tiger) breeding sites. Once located, Mosquito Control will address the larvae with the feasible means necessary to control the situation.

• Residents in the area will be made aware that there is a heightened potential for encephalitis infection in their neighborhood and that personal protection and yard sanitation is recommended. 

• Gravid Traps will be used to sample the adult mosquito population in a five City block area radiating from the epicenter. The number of mosquitoes collected will serve to quantify the adult population and provide specimens for testing.

• During the evening hours, truck mounted sprayers will be assigned to Spray portions of Zone 2 in an effort to reduce/maintain the vector population below the critical level. Spraying was conducted on the evenings of Aug. 11, 12, and 13. 

• The efficacy of this operation will be determined through the use of Gravid Traps that are scheduled for operation following the spray efforts. The number of mosquitoes collected will serve to quantify the adult population and provide specimens to be submitted for testing in our laboratory. This will reduce turn-around time of results to one or two days. Elevated abatement operations will continue until vector mosquito numbers fall below established threshold levels.

If you are having mosquito issues and would like to request a truck to spray your area, call 504-278-1503 or visit the Parish Website: //sbpg.net/304/Mosquito-Control, or at //vdci.net/vdci-service-requests.

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