Hong Kong International Airport
Scientists in Hong Kong says a young and apparently healthy man has been infected with Covid-19 twice.
It comes amid three months of unrest in Hong Kong.
All outgoing flights have been cancelled from the Hong Kong airport as a pro-democracy protest sit-in continues. Clashes between the protesters and Hong Kong police are growing increasingly violent. Over the weekend, images of a woman bleeding from her eye prompted many of the airport protesters to cover one eye in solidarity.