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West Nile Virus

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    Posted: July 27 2018 at 12:51am

West Nile Virus: Dozens of Meningitis and Brain Inflammation Cases Linked to Condition


With mosquito season in full swing, dozens of serious cases of the potentially deadly West Nile Virus have been reported in numerous U.S. states. 

Spread by mosquitoes, West Nile virus is a risk during the summer months. Across the U.S.—from California to Texas to West Hapshire -36 states have reported West Nile virus infections in people, birds or mosquitoes this year.

According to the latest CDC update issued on July 24, 39 cases of West Nile virus have been reported in 2018. Some 29 people were diagnosed with a neuroinvasive disease such as meningitis or encephalitis, which can be caused by West Nile virus. California and Louisiana have seen the most cases in 2018, both with 10

Numbers, however, are likely to be far higher, as most people who are infected do not show symptoms, and one in five people experience mild symptoms that aren't reported to the CDC.

In most cases, people who have contracted the virus experience nausea, fever, headaches, body aches and a skin rash.  

In severe cases, West Nile virus can target the nervous system and cause such illnesses as meningitis and encephalitis paralysis, and even death. According to the CDC, one in 150 patients will develop the potentially deadly form of the virus.

Health officials across the country are rolling out programs to attack the mosquitoes that carry the virus. On July 25, the Santa Clara County Vector Control District, which monitors infectious disease in the California county, announced spraying was scheduled for 11pm on Thursday.  Similar precautions were taken in Pittsburgh andd Sacramento.

Anyone bitten by a mosquito carrying West Nile virus can become ill. But individuals 50 and older or who live with chronic health conditions are most at risk for the severe form.

As there is no vaccine or treatment, infected individuals must let the illness run its course, but recovery can take months to years. Half of individuals with the disease will have physical or cognitive problems a year after first contracting it. Memory loss, difficulty walking and fatigue can linger long-term.

Mosquitoes become carriers of the virus if they feed on the blood of infected birds. Not all mosquitoes, therefore, can spread it. 

The best way to avoid catching the virus is to prevent mosquito bites, the CDC said.  It advised people to use insect repellent and wear long-sleeved shirts and pants in high-risk areas.

Other measures include removing mosquito habitats, such as standing water, from around the home, and ensuring that insects can't fly through gaps in windows and gaps in door screens.

Absence of proof is not proof of absence.
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