By K.D. Norris
The Kent County Health Department announced Friday that the Jamestown Canyon virus has been detected in tested mosquitoes in Kent County. The discovery was made during ongoing surveillance and testing conducted by the health department in the 49504 ZIP code (westside Grand Rapids and Walker).
This is the first time the Jamestown Canyon virus has been detected in Kent County, and the county stresses that the finding was not a human case but in planned mosquito testing.
“Jamestown Canyon virus is similar to West Nile virus in a couple different ways: one is that they are both transmitted by mosquitoes and that they are both quite serious,” Paul Bellamy, KCHD public health epidemiologist, said to WKTV. “However, they differ in the amount that we see them here in the midwest. West Nile virus has been occurring, reoccurring for many years. Jamestown Canyon virus has only been seen over the last (few) years. … over the last decade, we have seen an uptick in the amount of mosquito-born viruses across the U.S. This is one of the symptoms of that (mosquito population increase).”
For a detailed discussion on how Jamestown Canyon virus was discovered, and why Bellamy believes it happened now, see video at top or here.
West Nile and Jamestown viruses can also have similar symptoms, but also are similar in the rarity of their causing serious illness, Bellamy said.
“Both have very similar presentations, as far as when people do become ill,” he said. “A lot of them are asymptotic, but those that do have … fevers, malaise, chills, like that. But it has the potential of becoming serious. … (But) Jamestown Canyon virus has a very low potential of having that happen.”
While the virus has been detected throughout much of the United States, most cases to date have occurred in the upper Midwest. Jamestown Canyon virus can rarely cause severe disease, including infection of the brain (encephalitis) or the lining around the brain (meningitis). There are no vaccines to prevent or medicines to treat Jamestown Canyon virus infection.
“Fortunately, the measures that people can take to protect themselves from other mosquito borne illnesses like West Nile Virus will work,” Bellamy said in supplied material. “This time of year, it is good to practice simple and proven steps that we already know work in preventing mosquito bites.”
The KCHD recommends the following prevention tactics: using a mosquito repellant that contains 10-35 percent DEET; wearing light colored clothing and long-sleeved shirts and pants; staying indoors during dusk hours; remove or refresh water in bird baths, children’s wading pools, pet water bowls; and empty other small containers that can collect water in your yard.
More information about prevention can be found at accesskent.com/Health.
