Taiwan has put more than 100 people under quarantine while it investigates its first possible local case of coronavirus infection in more than two months, a Japanese woman who tested positive last week, Reuters reported.

Taiwan's early and effective response has kept the pandemic at bay, with just 446 infections and seven deaths, the majority of cases being imported and having already recovered.

Taiwan's Central Epidemic Command Centre said Japan had notified them on Tuesday that the woman, who arrived on the island as a student in late February, tested positive after returning to Japan on June 20, though she was asymptomatic.