First Oklahoma case of chikungunya confirmed in traveler

A Tulsa County resident, who recently traveled to Haiti on a mission trip, is the first Oklahoman confirmed to test positive for the chikungunya virus.
by Jaclyn Cosgrove Modified: June 19, 2014 at 10:13 pm •  Published: June 20, 2014
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A Tulsa County resident, who recently traveled to Haiti on a mission trip, is the first Oklahoman confirmed to test positive for the chikungunya virus, the state Health Department confirmed Thursday.

Chikungunya virus is transmitted to people by mosquitoes and can cause a range of symptoms, including fever, joint pain and headache, according to the Centers for Disease Control and Prevention.

Thus far, the only confirmed cases of chikungunya in the U.S. have been among people who traveled to other countries where mosquitoes carry the virus. Chikungunya outbreaks have occurred in countries in Africa, Asia, Europe, and the Indian and Pacific Oceans, according to the CDC.

In late 2013, the first local transmission of chikungunya virus in the Americas was identified in Caribbean countries and territories, according to the CDC. “Local transmission” means that mosquitoes in the area have been infected with the virus and are spreading it to people.

State epidemiologist Kristy Bradley said thus far, there has been no local transmission confirmed in the United States.

“There are no American mosquitoes spreading chikungunya virus right now,” Bradley said. “The national media has sort of confused that piece of the story.”

Bradley said public health officials in the U.S. are primarily concerned that residents will contract chikungunya in other countries, and then upon returning home, mosquitoes in the U.S. will bite those residents and contract chikungunya and then spread it to other residents.

Oklahoma is home to two types of mosquitoes known to be able to carry chikungunya, the aedes albopictus, or Asia tiger mosquito, and the aedes aegypti, or yellow fever mosquito, Bradley said.

“If the right type of mosquito bites that person while the virus is circulating in their blood, then those local mosquitoes have then become infected, and that’s the beginning of establishing local transmission of the virus,” Bradley said.

Residents who contract the virus should isolate themselves for seven days after developing symptoms, the time period when they have the highest levels of the virus in their blood, Bradley said.

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by Jaclyn Cosgrove
Medical and Health Reporter
Jaclyn Cosgrove writes about health, public policy and medicine in Oklahoma, among other topics. She is an Oklahoma State University graduate. Jaclyn grew up in the southeast region of the state and enjoys writing about rural Oklahoma. She is...
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