The Boston Public Health Commission announced Tuesday that a mosquito pool in Roslindale has tested positive for West Nile virus.

So far in Boston this year, there have been no recorded human cases of mosquito-borne illnesses, according to the commission. However, officials advised residents to protect their homes from the insects by using window screens and emptying standing water. The virus, which poses low risk to most people, is usually transmitted to humans through the bite of an infected mosquito.

The City of Boston and Suffolk County Mosquito Control Project have also been working to reduce the mosquito population with larvicide.