Fairfield parents sue Yale New Haven after 1-year-old son dies following ER visit A Connecticut couple is suing Yale New Haven Hospital, claiming that providers failed to properly diagnose and treat their 1-year-old son who died the morning after a visit to the emergency room in December. Kate and Mícheál Hallissey of Fairfield brought their son, Liam Francis Hallissey, to a pediatrician’s office with a fever of 103°F on Dec. 19 around 3:10 p.m., the lawsuit states.