There are several mosquito-borne diseases of concern in Delaware: Chikungunya, West Nile Virus, Eastern Equine Encephalitis, and Canine Heartworm Disease, and a possible newcomer, Zika, for which the state’s awareness is growing.
Learn how you can control mosquitoes in your own backyard. (Video)
Zika virus is a pathogen transmitted by mosquitoes that is now largely threatening Central and South America, the Caribbean islands, and the southeastern U.S. Symptoms include fever, rash, joint pain, headaches, muscle aches and/or conjunctivitis. Rarely fatal, the illness is usually mild with symptoms lasting several days to a week. What distinguishes the Zika virus from other mosquito-borne illnesses is the effect it seems to have on pregnancy. Zika can spread from a pregnant mother to her baby, and that infection may be linked to birth defects such as microcephaly.
The mosquito species capable of transmitting this disease are the Yellow Fever Mosquito (Aedes aegypti) and the Asian Tiger Mosquito (Aedes albopictus). Both species lay their eggs largely in man-made containers, such as tires, buckets, corrugated rain spouts, etc. Traditional mosquito control methods of truck-mounted and aerial sprays are limited in controlling these mosquitoes, since they are often active during daylight hours.
Reducing mosquito populations around the home via removal of containers that hold water and thus become prime mosquito habitat is one of the key strategies for preventing mosquito bites and the possible transmission of Zika virus.
From the Delaware Division of Public Health
Chikungunya virus (CHIKV) is a pathogen transmitted by mosquitoes that is now threatening the United States. Although rarely fatal, the symptoms include debilitating joint pain and can persist for several weeks. In 2014, Florida, Puerto Rico, and the U.S. Virgin Islands recorded their first locally-acquired cases. According to the Centers for Disease Control, in 2018 only 1 travel-related case of CHICKV was reported in Delaware. As of October 3, 2019, no local or travel-related cases of CHIKV have been reported in Delaware.
The mosquito species that transmit this disease are the Yellow Fever Mosquito (Aedes aegypti) and the Asian Tiger Mosquito (Aedes albopictus). Both species lay their eggs in man-made containers, such as tires and buckets. Traditional mosquito control methods of truck-mounted and aerial sprays are somewhat ineffective in controlling these mosquitoes. Removal of containers that hold water and yard sanitation are key strategies for preventing Chikungunya.
From the Centers for Disease Control and Prevention
From the American Mosquito Control Association
West Nile virus (WNV) is a virus transmitted by mosquitoes. While there is a vaccine available for horses, there is no human vaccine for WNV. The best way to reduce your risk of WNV is to protect yourself from mosquito bites.
The Mosquito Control Section reminds residents and visitors to protect themselves from mosquito bites and mosquito-borne disease by avoiding mosquito activity when possible, dressing in long sleeves and long pants, and properly applying mosquito repellent.
S. McIntire, M. Esposito and J. Badger, 2021, Sentinel Chickens and Their Role in Mosquito-Borne Virus Surveillance in Delaware, Delaware Journal of Public Health, Vol. 7(1), DOI: 10.32481/djph.2021.01.014
West Nile Virus in Delaware brochure
From the Centers for Disease Control and Prevention
From the Delaware Division of Public Health
Eastern Equine Encephalitis (EEE) is transmitted to horses and humans by mosquitoes. Like West Nile virus, there is a EEE vaccine available for horses, but not for humans. Fortunately, human cases of EEE in Delaware are rare. The last recorded human case of EEE in Delaware occurred in 1979.
From the Centers for Disease Control and Prevention
Canine heartworm, a disease fatal to dogs, is circulated within the dog population by mosquitoes. The Delaware Mosquito Control Section does not monitor heartworm levels in the mosquito population. Dog owners are encouraged to protect their pets from heartworm by administering preventative medications year-round.
From the American Heartworm Society
The American Mosquito Control Association has created short, educational videos about mosquito-borne diseases and how these diseases have affected the US population.
Related Topics: dfw, fish, fish and wildlife, Health and Safety, mosquito, mosquito control, wildlife
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