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Mosquito Borne Viruses
It is also not uncommon for Virginia to report a few imported cases of a mosquito-borne disease each year. Diseases may include malaria, dengue, or chikungunya, or Zika. These cases usually occur in people who have traveled to tropical or sub-tropical areas of the world.
References are available upon request. Please contact the Mosquito Control Superintendent at 757-890-3791 for more information.
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Chikungunya Virus
Chikungunya virus is a pathogen transmitted by mosquitoes, and has established itself in the Caribbean (approximately 350,000 suspected cases in the Western Hemisphere since December 2013.)
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Dengue
Although it has a low mortality, dengue has very uncomfortable symptoms and has become more serious, both in frequency and mortality.
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Dog Heartworm
Dog Heartworm (Dirofilaria immitis) can be a life-threatening disease for canines.
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Eastern Equine Encephalitis
Eastern Equine Encephalitis (EEE) is a mosquito-borne viral disease and, because of the rate of death among infected persons, is regarded as one of the most serious mosquito-borne diseases in the United States.
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Malaria
Malaria is an ancient disease with more than one million deaths and 300 to 500 million cases are still reported annually in the world.
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St. Louis Encephalitis
St. Louis Encephalitis (SLE) is closely related to West Nile virus and is transmitted by the same mosquito species.
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West Nile Virus
The most common mosquito-borne diseases found in eastern Virginia includes West Nile Virus (WNV).
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Zika
Zika is an emerging arbovirus that is spread directly from mosquitoes to humans and vice versa, unlike other arboviruses that are permanently established and spread through bridge vectors, such as birds.