Mosquitoes in county test positive forWest Nile
Populations thriving in this year’s wet conditions
A pool of mosquitoes in Linthicum has tested positive forWest Nile virus, according to theMaryland Department of Agriculture.
The result came several weeks after the state’s first confirmed case ofWest Nile virus this year as mosquito populations are thriving inMaryland’swet conditions.
Brian Prendergast, program manager for mosquito control at the Maryland Department of Agriculture, said his department is stepping up efforts to combat flourishing mosquito colonies. His team puts out hundreds of traps each week across the state, including about 50 a week in Anne Arundel County. He said hewas not surprised that the trap in Linthicum contained mosquitoes carryingWestNile.
“It’s not a brand-new occurrence,” he said. “It’s not shocking thatwe got a positive trap.”
The Maryland Department of Health partners with the agriculture department to test mosquitoes in traps for human pathogens. Several other mosquito colonies in Prince George’s County have tested positive forWestNile virus this year, Prendergast said.
The first case of West Nile virus in Maryland this year was confirmed July 23, whenthe state health department announced an adult in the Baltimore area contracted the virus.
Prendergast encouraged Maryland residents to protect against mosquito bites by wearing long, loose-fitting clothing and using repellents. He also suggested residents dump any containers on their property that contain rainwater to guard against breeding grounds for Asian tiger mosquitoes, which he said present the largest nuisance of all mosquito species in the state.
The mosquito population inMaryland this summer is about two to three times larger than usual, Prendergast said.
“It’s much higher than it’s ever been,” he said. “We’re getting a huge number of complaints. That makes sense — it’s because of all the rainwe’ve gotten.”
Mosquito breeding in Maryland has been aided by record-setting rain this spring and summer. Many mosquitoes lay eggs in flood-prone areas, and flooding prompts their eggs to hatch. Prendergast said the state has been stepping up its efforts to spray for the bugs and treatwater where they lay eggs.
“It is very difficult to keep up with it,” he said.