This year 97 percent of blacklegged ticks, commonly known as deer ticks, survived the Connecticut winter and are hungry for blood as temperatures warm. These arachnids transmit bacteria that cause Lyme disease and are likely thriving in your backyard, according to Connecticut Chief Entomologist Kirby Stafford. About 3,000 cases of Lyme disease are reported in the state each year, the state Department of Public Health reports, but Stafford says that most cases aren’t reported. The true number is closer to 35,000, he estimates. “Under-reporting is more likely to occur in highly endemic [widespread] areas, whereas over-reporting is more likely to occur in non-endemic areas,” according to the Centers for Disease Control and Prevention.