New Jersey reports most West Nile viruses are human since 2012

West Nile Virus (WNV) cases in New Jersey are hitting all-time highs with 31 human cases reported nationwide this year – including two virus-related deaths among residents of Bergen County.

In 2012, the state reported the largest number of cases in a year with 48.

"The number of human West Nile virus cases is the highest we've seen since 2012, and the season is not over yet," said New Jersey Health Commissioner Dr. Shereef Elnahal. "This summer's hot and humid climate has resulted in an increase in mosquito populations and associated viruses."

The two deaths this year involved a 62-year-old man and an elderly woman from Bergen County. Both died this month.

In 2017, eight human cases of West Nile virus have been reported. Commissioner Elnahal noted that the number of mosquito groups positive for West Nile virus is the highest ever reported, especially in the northwestern and central parts of the state, where levels are generally not high. There has also been an increase in reports of dead and dead birds.

"Residents should protect themselves by using an insect repellent, wearing long sleeves and trousers and avoiding going out at dawn and dusk when mosquitoes are the most active," said Commissioner Elnahal. "West Nile virus most often causes mild symptoms, such as fever, headache, body aches, or rash, in healthy people, but can cause serious illness in the elderly and those with compromised immune systems." is weakened.

The virus is spread by the bite of a mosquito infected with West Nile virus. It is not transmitted from person to person. Many infected people do not get sick and do not develop symptoms. About 20% of those infected will develop West Nile fever. When symptoms appear, they can be mild or severe. Mild symptoms include a flu-like illness with fever, headache, body aches, nausea and sometimes swollen lymph nodes or rash on the chest, stomach and back.

Severe symptoms include high fever, stiff neck and swelling of the brain (encephalitis) that can lead to coma, convulsions and death. Less than 1% of those infected will develop severe symptoms. People over 50 and people with weak immune systems are more likely to develop serious illness.

"The number of cases of West Nile virus in New Jersey is very worrying," said Ray Bukowski, deputy commissioner of the New Jersey Department of Environmental Protection for Natural and Historical Resources. "The hot, humid weather we've seen is increasing the mosquito population. Even though the weather is getting colder, it is very important that the public removes the smallest amounts of stagnant water from their properties, in order to reduce the risk of exposure to mosquito bites and mosquito-borne diseases. The protection of public health is essential. "