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County receives DEP mosquito surveillance report; 11 samples tested positive for West Nile virus

Cameron County Commissioners · November 20, 2025
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Summary

County officials said a DEP mosquito surveillance summary for 2025 is available; the report shows 11 mosquito samples in Cameron County tested positive for West Nile virus and includes sampling locations and dates.

The chair told commissioners the county received the Department of Environmental Protection’s 2025 mosquito surveillance and control summary, which documents the number of samples, where they were taken in the county and indicates 11 samples tested positive for West Nile virus.

The chair said the county had discussed positive samples earlier in the summer and that the annual report is now on file in the county office for anyone who wishes to review it. Commissioners emphasized public education and said sampling was conducted in July, August and September.

No formal public-health action or emergency declaration was announced during the meeting; commissioners said educational materials and the full DEP report are available at the courthouse for residents. County officials did not provide additional specifics about the locations of the positive samples during the meeting.

Residents are advised to follow standard mosquito-avoidance guidance from public health authorities (noted during the report) and to consult the DEP report for detailed surveillance maps and dates.