West Nile Virus: If You’re Over 50, Your Risk is Higher

Federal health officials are warning older adults to take extra steps to protect themselves against the mosquito responsible for this summer’s record outbreak of West Nile virus.

Thanks to the extreme heat and drought affecting the country, the mosquito that carries the West Nile virus has flourished. The result, say officials with the U.S. Centers for Disease Control and Prevention, is the worst outbreak of the virus in history — infecting people in 47 states and causing 41 deaths so far.

The 1,118 cases reported as of this week make this year’s number the most reported cases since the virus was first detected in the U.S., in 1999. About 75 percent come from just five states — Texas, Mississippi, Louisiana, South Dakota and Oklahoma. Texas has been particularly hard-hit, with nearly half the cases reported there.

The only states not reporting West Nile activity are Vermont, Alaska and Hawaii.

In a teleconference with reporters Wednesday, CDC officials said they expect reported cases to spike even higher this month, as the disease peaks, according to ABC News.

Although most people will suffer only mild flulike symptoms — or won’t show any symptoms at all — 20 percent may develop a fever, headache, body ache, vomiting, swollen lymph glands or a skin rash.

One of every 150 people with the virus will develop the more serious “neuro-invasive” diseases, such as encephalitis or meningitis. Of all the cases reported so far, more than half — 56 percent — have been neuro-invasive, Lyle Petersen, M.D., the CDC’s director of the division of vector-borne infectious diseases, said in the teleconference.

Older adults with health problems, such as cancer, diabetes, high blood pressure and kidney disease, or on immune-suppressant drugs for organ transplant, are at the highest risk for developing severe symptoms if they become infected with the virus.

“People over 50 are at increased risk for the neuro-invasive consequences from the virus, particularly in the five states that have been hardest hit,” said Tom Skinner, a spokesman for the CDC. “If you’re in an area that you know gets lots of mosquitoes, you need to take precautions.”

The most important steps to take to protect yourself, according to the CDC:

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