Sri Lanka has reimposed a countrywide 24-hour curfew after a surge in the number of coronavirus cases, most of them navy sailors who were searching for those evading quarantine. The Indian Ocean island nation has confirmed 420 cases of the virus, including seven deaths, and has ramped up testing. Sri Lanka had partially lifted a monthlong curfew in more than two thirds of the country. Among the newly infected were 30 navy sailors from a camp on the outskirts of the capital, Colombo. A total 60 sailors so far have been infected and the camp has been isolated. Sri Lanka’s health ministry said that it has significantly increased the number of coronavirus tests being done. Some 1,500 tests were performed recently — more than double the roughly 700 tests done previously, according to the ministry.