MOSQUITOS. CONCERNS ABOUT THE DISEASES THEY CARRY ARE GROWING. THIS MORNING IN NEW ENGLAND, THERE IS NEWS OF ONE CASE TURNING DEADLY. THIS MORNING COMMUNITIES ARE ON ALERT. >> THEY CAN GET OUT OF CONTROL AND DO A LOT OF DAMAGE. >> Reporter: THIS YEAR MOSQUITOS HAVE BEEN LINKED TO WEST NILE VIRUS AND EASTERN EQUINE ENCEPHALITIS. IN NEW HAMPSHIRE A MAN BITTEN BY A MOSQUITO LATER DIED OF EEE. IT IS NEW HAMPSHIRE'S FIRST HUMAN CASE IN A DECADE. CASES HAVE POPPED UP IN WISCONSIN, VERMONT, NEW JERSEY AND MASSACHUSETTS, WHERE SPRAYING BEGAN TUESDAY NIGHT. >> OUR KIDS ARE -- YOU KNOW, THEY GET BIT A LOT, SO I WOULDN'T WANT THEM TO GET ANYTHING LIKE THAT. I'M GLAD THAT THEY'RE TRYING TO MITIGATE THAT. >> Reporter: EXPERTS SAY THE TRIPLE E VIRUS IS RARE BUT TROUBLES. >> IT'S AN INFECTION NO ONE WANTS TO GET AND WE CAN AVOID IT BY NOT GETTING BITTEN BY MOSQUITOS. >> Reporter: WEST NILE HAS BEEN FOUND IN 33 STATES. BUT EXPERTS SAY AMERICANS CAN STILL ENJOY THE HOLIDAY WEEKEND WITH PRECAUTIONS. >> MOSQUITOS ARE PREDOMINANTLY OUT VERY EARLY IN THE MORNING OR DUSK IN THE EVENING. SO THAT'S THE TIME YOU WANT TO BE MORE CAUTION. >> EXPERTS SAY THERE IS MORE YOU CAN DO INCLUDING