Expressions of condolences have flooded social media for the parents of a three-year-old girl who has become Hong Kong’s youngest Covid-related fatality. The girl had no underlying medical issues and was in critical condition after being admitted to Prince of Wales Hospital in Sha Tin on Saturday. She was transferred the next day to an intensive care unit at Hong Kong Children’s Hospital at Kai Tak, where she died at 8.37pm on Tuesday. She was one of the two Covid-related fatalities announced on Tuesday night. The other was a 100-year-old chronically ill woman, the city’s oldest Covid-related death, who tested…