Dengue Fever
Last reported: August 2025
high risk
Mosquitoes in Madison, Alabama
5 active species · Season Apr–Oct · Humid Subtropical climate · High standing-water risk
Active disease alerts
Zika Virus
Last reported: July 2025
West Nile Virus
Last reported: September 2025
Species active in Madison
Asian Tiger Mosquito
Aedes albopictus
Striking black mosquito with white stripes on legs and thorax. Originally from Southeast Asia, now widespread in North America. Known for aggressive, persistent biting behavior.…
Carries: Dengue Fever · Zika Virus · West Nile Virus
Northern House Mosquito
Culex pipiens
Brown mosquito with banded legs. Common in temperate climates. Often enters homes at night. Prefers standing water with organic matter.…
Carries: West Nile Virus · St. Louis Encephalitis · Avian Malaria
Southern House Mosquito
Culex quinquefasciatus
Brown mosquito with banded legs and body. Thrives in warm, humid climates. Often found indoors at night. Prefers stagnant water with organic material.…
Carries: West Nile Virus · St. Louis Encephalitis · Japanese Encephalitis
Eastern Malaria Mosquito
Anopheles quadrimaculatus
Medium-sized brown mosquito with distinctive spotted wings. Found primarily in southeastern US. Breeds in clean, shallow water.…
Carries: Malaria · Plasmodium
Gallinipper (Flapwing Mosquito)
Psorophora ciliata
Large, dark mosquito, one of the largest in North America. Breeds in temporary water. Known for severe, painful bites. Often appears in swarms.…
Carries: Eastern Equine Encephalitis (EEE) · West Nile Virus