World Health Organisation (WHO) head Tedros Adhanom Ghebreyesus has said in a Tokyo Olympics Twitter message that Covid-19 can be defeated if all play their part.

“Glad to be in Japan to address the International Olympics Committee,” Tedros said in his tweet. “I've come with a simple but urgent message: we can defeat Covid-19, but only if everyone plays their part.

“May these Tokyo 2020 Olympics be a source of hope and unity to achieve vaccine equity and end the pandemic.”