About 250 demonstrators demanding an end to President Paul Biya's rule squared off with dozens of police, many in riot gear, backed up by armoured vehicles.
The rapid spread of coronavirus raised fears of a pandemic on Friday, with countries on three continents reporting their first cases and Swiss authorities cancelling the giant Geneva car show.
The World Health Organization (WHO) warned that the world needs nearly six million nurses. According to a report that there are just under 28 million nurses on the planet.
The UN health agency on Tuesday warned cancer cases would rise by 81 percent in low- and middle-income countries by 2040 because of a lack of investment in prevention and care.
Azerbaijan and ethnic Armenian forces fought new clashes in and around the Nagorno-Karabakh region on Thursday, before the United States, France and Russia were due to meet in Geneva to try to avert a wider war in the South Caucasus.