Mosquito Borne Illness Alert Update
October 19, 2026
DOH-Hillsborough continues to respond to the ongoing dengue outbreak in Hillsborough County and encourages residents to take steps to reduce mosquito exposure.
The alert is in response to a water sample taken on October 12. The public should exercise caution in and around Lake Thonotosassa.
DOH-Hillsborough Issues Rabies Alert
September 14, 2026
Follow-up water samples did not detect algae toxins, indicating the public may resume water-related activities.
The update is being issued due to an eighth confirmed human case of locally-acquired dengue fever.
DOH-Hillsborough Issues Mosquito-Borne Illness Alert
July 31, 2026
The alert is in response to a second confirmed case of locally-acquired dengue.
DOH-Hillsborough is informing residents of a confirmed human case of locally-acquired dengue.
DOH-Hillsborough has issued a health alert for the presence of harmful blue-green algae toxins in Lake Thonotosassa.
Listeriosis outbreak associated with a restaurant in Tampa with food consumption between March 2026 and June 2026.
Tests completed on Wednesday, July 8, 2026, indicate that the water quality at Davis Island beach does not meet the recreational water quality criteria for Enterococcus bacteria.