More mosquitoes have tested positive for EEE in Methuen, Massachusetts.
"It's scary," said Lisa Fulton. "I work with children. They're always outside. We're very concerned about their safety."
The infected mosquitoes were collected from test samples in the Hampstead Street area near the New Hampshire border on the east side of the city, which will now be sprayed next week.
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The city was already at a critical threat level for the virus after a horse died from EEE on the city's west side, which was sprayed Thursday night.
Health officials are reminding people that spraying will not solve the problem.
"It helps minimize the risk," said Amy Ewing, a public health nurse for the city.
Spraying will take place east of Interstate 93 from 7:15 p.m. Tuesday until 2 a.m. Wednesday.