Luck? Genetics? Italian island spared from coronavirus outbreak

Days passed and none of Giglio’s islanders in Italy developed any novel coronavirus symptoms even though the conditions seemed favourable for the disease to spread like wildfire. Were residents perhaps infected but didn’t show symptoms? Was it something genetic? Something else? Or just plain luck?

Stranded on a tiny Italian island, a cancer researcher grew increasingly alarmed to hear that one, and then three more visitors had fallen ill with Covid-19.
Paola Muti braced for a rapid spread of the coronavirus to the 800 closely-knit islanders, many of whom she knows well. Her mother was born on Giglio Island and she often stays at the family home with its charming view of the sea through the parlor’s windows.