New mosquito species identified in Mesa County

Local situation

A species of mosquito not previously found in Mesa County has been detected. According to the Grand River Mosquito Control District (GRMCD), Aedes aegypti mosquitoes have been identified in traps located in the Orchard Mesa area. Since the mosquito season started, they’ve collected more than 100 eggs and at least five adults of this species. 

“We have had active surveillance in the county for the past month. To date, we’ve only detected the Aedes aegypti in a small area in Orchard Mesa and we are actively treating and fogging in this area,” says Tim Moore, District Manager, GRMCD.

Aedes aegypti mosquitoes are most active during the daytime and they don’t travel as far as other species of mosquitoes. Aedes aegypti will only fly about 50 feet in its lifetime and can be recognized by black and white markings on its legs. 

These mosquitoes are more commonly found in tropical, subtropical, and in some temperate climates. A challenging characteristic of these mosquitoes is their ability to lay eggs in the smallest amounts of water. It makes them highly adaptable and difficult to control.  They can also transmit several viruses, including dengue, chikungunya, Zika, and yellow fever. However, this does not mean these mosquitoes are currently transmitting these diseases. 

“No cases of the diseases that can be associated with this species of mosquito have been reported in Mesa County. If there is ever a concern about cases, we will notify the community,” said Kathleen Satterfield, Epidemiologist at Mesa County Public Health.

Plan of action

GRMCD’s surveillance program will continue for both adults and larvae through September. 

“Our technicians will continue to abate the Aedes aegypti by treating the larvae and fogging in the area until our trap numbers subside,” explains Moore.

As GRMCD works to eradicate this species of mosquito,  Mesa County Public Health (MCPH) tracks and responds to shifts in disease trends, and works to detect any unusual disease patterns.  

“We take the health of our community very seriously. We are working closely with our partner, GRMCD, to monitor the situation. We have a strong public health system here in Mesa County- we are prepared and ready to respond to whatever health challenges may arise,” said Satterfield.

Prevention is key

Prevention remains crucial this mosquito season. The best way to keep you and your family healthy is to limit mosquito bites. There are simple and effective precautions you can take to lower your risk:

• Use an EPA-approved insect repellent effective against mosquitoes. Look for one that contains DEET, Picaridin, IR3535, 2-undecanone, or oil of lemon eucalyptus.
• Dress in long sleeves and pants when in areas where mosquitoes are active.
• Drain and remove sources of standing water on your property.
• Follow the above suggestions when traveling internationally to locations where mosquitoes are present.