Massachusetts public health officials say the Eastern equine encephalitis virus has been found in the state for the first time this summer.

The Department of Public Health said Friday that the mosquito sample was collected Tuesday in Bridgewater. The DPH said the finding raises the town's risk level to moderate. Officials said the finding means people should take precautions against mosquito bites but don't need to avoid outdoor evening events.

There have been no human cases this year of EEE or West Nile virus, also spread by mosquitoes.

There was one EEE case in Massachusetts last year.