Ghana on Monday closed all schools and universities and suspended public events to stop the spread of coronavirus as a string of African nations imposed tighter restrictions to stem the spread of the global pandemic.

President Nana Akufo-Addo announced in an address to the west African nation that the authorities were shutting schools and universities "until further notice".

Public gatherings—including conferences, , sports matches and political rallies—have also been suspended for four weeks, he said.

Ghana on Sunday announced it would start barring entry to the country from Tuesday for any non-Ghanaian citizen or resident "who, within the last 14 days, has been to a country that has recorded at least 200 cases".

The move came as the authorities reported a rise in the number of confirmed cases of COVID-19 from two to six, with the new cases all arrivals from abroad.

Numerous nations in sub-Saharan Africa—including Senegal, Kenya and South Africa—have begun imposing entry restrictions or closing schools as the continent scrambles to halt the spread of the virus.