THIS IS WBZ NEWS. >> BATTLING MOSQUITOES FROM THE AIR AND ON THE GROUND. RIGHT NOW, MASSACHUSETTS IS STEPPING UP ITS ATTACK AGAINST POTENTIALLY DEADLY EEE. >> THIS AS WE LEARN MORE TONIGHT ABOUT THE MAN IN NEW HAMPSHIRE WHO SUDDENLY LOST HIS LIFE TO THE RARE ILLNESS. STEVEN PERRY'S FAMILY SAID HE WAS HEALTHY, ONLY 41 YEARS OLD. BUT HE DIED WITHIN A WEEK OF CONTRACTING EEE. THANKS FOR JOINING US, I'M DAVID WADE. >> I'M LISA HUGHES. As THAT FAMILY MOURNS, MASSACHUSETTS IS TAKING PRECAUTIONS TO PROTECT OTHER PEOPLE. HERE IS WBZ'S MIKE SULLIVAN. >> Reporter: THIS IS HAMPSTEAD NEW HAMPSHIRE WHERE A 41-YEAR-OLD MAN PASSED AWAY FROM TRIPLE E. HE WAS HAPPY AND HEALTHY, NOW THEY ARE MOURNING HIS LOSS. IT HAPPENED SO FAST. STEVEN PERRY'S SISTER SAID HE DIED IN A WEEK. HAD HE SURVIVED HE LIKELY NEVER WOULD HAVE BEEN THE SAME. >> UP TO A THIRD OF PEOPLE DIE OF THE DISEASE AND THE PEOPLE WHO RECOVER HAVE LIFELONG DISABILITIES. >> Reporter: THE VIRUS CAUSES BRAIN INFLAMMATION THAT CAN LEAD TO SEVERE NEUROLOGICAL DAMAGE. >> THE RISK OF THESE MOSQUITO TRANSMITTED INFECTIONS IS STATEWIDE. WE HAVE A SURVEILLANCE SYSTEM IN PLACE TO IDENTIFY INFECTIONS. >> Reporter: SYMPTOMS CAN INCLUDE HIGH FEVER, STIFF NECKS AND HEADACHES. THEY CAN SHOW WITHIN THREE TO TEN DAYS OF BEING BITTEN. THE MOST SURPRISING ASPECT OF THE VIRUS IS THERE IS NO CURE OR TREATMENT. >> THIS IS A SMALL TOWN. THE IDEA SOMEONE DIED OF THIS BEFORE WE HEARD ANYTHING ABOUT IT IS PRETTY SCARY. >> Reporter: SO FAR IN MASSACHUSETTS, AN 80-YEAR-OLD MAN FROM WORCESTER COUNTY WAS THE FIRST KNOWN CASE IN THE STATE SINCE 2020. IN PARTS OF WORCESTER COUNTY THEY ARE SPRAYING PESTICIDES FROM PLANES. >> IT WOULD BE VERY HELPFUL TO KNOCK DOWN POPULATIONS QUICKLY. >> Reporter: LAUREN MCGOWEN IS WITH CLARK, THE COMPANY DOING THE TREATMENTS. SHE CALLS THIS ROUTINE. SOMETHING THEY DO ALL ACROSS THE COUNTRY. >> WE USE SMALL AMOUNTS OF ACTIVE INGREDIENT. ABOUT A SHOT GLASS TO TREAT AN ENTIRE FOOTBALL FIELD. >> Reporter: THE ACTIVE INGREDIENT IS DISPERSED IN A WAY THAT IMPACTS THE MOSQUITOES' BIOLOGIST REMAINING SAFE TO HUMANS AND PETS. >> IF YOU HAPPEN TO BE OUTDOORS DURING THE APPLICATION, THERE ARE NO EXTRA STEPS YOU NEED TO TAKE. >> Reporter: WHICH ISN'T TO SAY PEOPLE SHOULDN'T TAKE PROPER PRECAUTIONS LIKE WEARING REPELLANT AND LONG SLEEVES. YOU MAY BE SAYING IT IS HOT. I DON'T WANT LONG SLEEVES BUT AFTER TALKING TO PERRY'S FAMILY, THEY WISH THEY KNEW MORE AND TOOK MORE PRECAUTIONS. NOW THEY HOPE HIS STORY WILL BE A WARNING TO OTHERS. IN HAMPSTEAD, I'M MIKE SULLIVAN, WBZ NEWS. >>> WELL THERE ARE ALSO TWO MORE CONFIRMED HUMAN CASES OF ANOTHER MOSQUITO BORN VIRUS. WEST NILE. TWO MEN IN THEIR 60s TESTED POSITIVE. WHILE WEST NILE ISING SIGNIFICANTLY LESS LETHAL THAN EEE IT IS MORE COMMON. YOU CAN PROTECT YOURSELF FROM IT THE SAME WAY. BY AVOIDING MOSQUITO BITES. THERE ARE NOW FOUR HUMAN CASES OF WEST NILE IN MASSACHUSETTS THIS YEAR. >> OUR TEAM COVERAGE OF THIS HEALTH ALERT CONTINUES WITH CHIEF METEOROLOGIST ERIC FISHER. YOU WILL GIVE US A MAP OF WHAT ARE THE HOT SPOTS. >> WE HAVE DATA ON WHERE TO TRACK. YOU CAN SEE IF YOU ARE IN THE HIGHER RISK ZONES. SOUTHERN WORCESTER COUNTY. SOUTHEAST MASSACHUSETTS AROUND PLYMOUTH. AND SOME SPOTS NOW SHOWING UP TOWARD THE MERRIMAC VALLEY. THE HIGHEST RISK IS IN THE BRIGHT SHADES OF RED. DUDLEY, OXBRIDGE, TOWNS AROUND PLYMOUTH. MIDDLEBORO. IN TERMS OF MOSQUITO HABITAT, LAST YEARLINGS WE HAD SO MUCH RAINFALL. THIS YEAR, WE HAD A LOT OF RAIN RAIN UP FRONT. HE SUMMER HAS NOT BEEN AS RAINY AS LAST YEAR, BUT WE HAVE HAD A LOT OF WATER. IT HAS BEEN A HOT SUMMER. I KNOW IT BACKED OFF THE LAST COUPLE OF WEEKS. UNTIL RECENTLY, PLENTY OF HEAT AND HUMIDITY. I HAVEN'T HEARD A LOT OF PEOPLE COMPLAIING ABOUT THE MOSQUITOES BUT IT MAY JUST BE PART OF THE CYCLE. THE DISEASE IN A FIVE TO TEN YEAR CYCLE IS GOING THROUGH THE POPULATION SO WHAT MOSQUITOES ARE OUT THERE ARE CARRYING IT. WE ARE PASSING ALONG ANY NEW DATA THAT CO