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Suffolk County Department of Health Services

Suffolk reports first human West Nile virus case of season as mosquito positives rise

by Aug 23, 2026
Suffolk County health officials have reported the county’s first human case of West Nile virus this season, along with dozens of additional mosquito samples that tested positive for the virus.

Suffolk health officials report 25 new West Nile virus mosquito samples

by Aug 14, 2026
Suffolk County reported 25 additional West Nile-positive mosquito samples, including one in Aquebogue, bringing the season total to 54.

Eleven Suffolk mosquito samples positive for West Nile virus

by Jul 28, 2026
Suffolk County health officials said 11 mosquito samples collected earlier this month have tested positive for West Nile virus.

Cyanobacteria bloom confirmed in Flanders pond

by Jul 28, 2026
A new cyanobacteria bloom has been confirmed at Silver Brook Pond in Flanders, Suffolk County health officials said Monday.

Suffolk reports first West Nile-positive mosquito sample of the year

by Jul 2, 2026
A mosquito sample collected June 24 is Suffolk County's first to test positive for West Nile virus this year, health officials reported Thursday.
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Rabid raccoon found in Manorville, Suffolk health department says

by Jun 28, 2026
The Suffolk County Department of Health Services is reporting that a racoon found in Manorville has tested positive for rabies.

Suffolk health department lifts Peconic River advisory following Jan. 14 sewage discharge

by Jan 21, 2026
The health department has lifted a Jan. 14 health advisory urging the public against recreating in the tidal waters of the Peconic, after water tests indicate the ares is suitable for primary contact recreation.

Untreated sewage discharged into Peconic River following pipe break at E. Main Street construction site

by Jan 15, 2026
The county health department is urging people against contact with the tidal waters of the Peconic River after a pipe break at an East Main Street construction site caused the discharge of 10,000 gallons of untreated sewage into the river.

Twenty-one mosquito samples, including one in Riverhead, test positive for West Nile Virus

by Sep 3, 2025
To date this season, 111 mosquito samples have tested positive for West Nile virus. So far this season there have been no human cases of the virus reported.

County plans treatment of marshes to control mosquito larvae this week

by Aug 18, 2025
Suffolk County’s vector control division will be applying pesticides today through Wednesday to control mosquito larvae in certain marshes across the county, including some in the Town of Riverhead, the Suffolk County Health Department announced in a press release issued this afternoon.