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January 14, 2017: Two New Disease-Carrying Mosquitoes Found In Florida

Two new tropical disease-transmitting mosquitoes have been found in the state of Florida for the first time, according to researchers from University of Florida.

Entomologist Nathan Burkett-Cadena did not expect to find the Aedeomyia squamipennis and Culex panocossa species in Homestead as well as in Florida City on a research trip back in October. It is a sign that Florida is now becoming more conducive to tropical mosquitoes, especially as they are found near the mainland.

Both species are believed to transmit viruses to humans and lay their eggs on weeds that float in canals and drainage waters, warned Burkett-Cadena in a Miami Herald report.

Mosquito-Weary South Florida

While native to Central and South America, the mosquitoes likely arrived via plants and spread across South Florida canals and ponds. They are expected to grow in numbers soon.

“This would speak to some broader environmental changes that have caused Florida to be more accessible and hospitable to tropical mosquitoes,” the scientist said, pointing to global warming as the likely culprit and saying nobody had the species’ arrival “on their radar.”

Apart from climate change, increased tourism and global trade have probably made Florida a good destination for the exotic species, Burkett-Cadena added.

It’s a particularly bad time for the discovery in South Florida, as a Zika virus outbreak hit Wynwood and Miami Beach over the summer and extending into fall. The outbreak, with over 1,200 local and travel cases documented statewide, is caused by the Aedes aegypti mosquito.

While dry, cool weather paired with aggressive control measures has helped contain the mosquito spread, the disease is expected to return by springtime.

Severe birth defects in different places have mounted a full-blown Zika crisis. The virus takes the form of microcephaly in babies and kids, a defect characterized by smaller-than-normal heads.

The Centers for Disease Control and Prevention have issued numerous health and travel recommendations for people who are most prone to the virus and its dangers, particularly pregnant women. As of Nov. 18, the World Health Organization has lifted the Zika virus’ global health emergency status.

While no vaccine exists for the virus yet, researchers have identified seven key proteins within it that may have been instrumental in the extent of the outbreak’s damage.

The two new species also carry viruses and can easily conquer densely populated areas.

There are a number of differences between them, though: the Aedeomyia mosquito feeds mainly on birds, which transmit the West Nile, Eastern equine encephalitis, and other viruses, while the Culex panocossa is a confirmed vector for the Venezuelan equine encephalitis, which poses a deadly threat to kids and the elderly.

The latter also likely carries the local Everglades virus, which is typically detected in native Culex species. The virus is so far contained since the mosquitoes do not survive well outside the Everglades, but researchers are worried about the mosquito’s tropical kin starting to spread it.

The virus in its mild form can lead to flu-like symptoms and joint aches but can progress to encephalitis and occasionally trigger comas that have not so far led to mortalities.

With the recent discovery, the number of invasive mosquitoes found in Florida over the past decade has reached nine.

Source: Tech Times

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