All countries must remain "on alert" over the possibility of further transmission of the coronavirus, the World Health Organisation (WHO) has warned.
Maria Van Kerkhove, WHO technical lead on Covid-19, said that many people remain susceptible to the virus, even where transmission has been suppressed.
Asked on the BBC's Andrew Marr programme if a second wave of infection could be likely in countries that have started to ease their lockdowns, Ms Van Kerkhove said: "It's certainly possible.
What we're seeing in a number of countries that have been successful in suppressing transmission is that many more people remain susceptible." She added: "All countries must remain on alert for the possibility of additional transmission even if they have