Caption Dedham, MA - 4/30/2020: A drive-by birthday parade for Gavin Brennan of Dedham who celebrated his seventh birthday and successfully completing cancer treatment at Children's Hospital/Dana Farber. Gavin was among the first pediatric cancer patients in the nation to test positive for COVID-19 while undergoing chemotherapy. - (Barry Chin/Globe Staff) (Barry Chin/Globe Staff) 1 of 69