"There are no speed boats on the water, the streets and beaches are empty and there are very few tourists," he tells CNN Travel. "I've never seen it like this -- not even after the tsunami in 2004." That's because authorities have taken extraordinary lockdown measures to slow the spread of the Covid-19 virus in Phuket, which has emerged as the country's coronavirus hotspot. With 170 confirmed cases of Covid-19 as of April 10, this island of 400,000 or so residents has the highest infection rate per capita out of all of Thailand's 77 provinces.