The World Health Organization (WHO) said Monday that it's "extremely concerned" by the recent surge in Covid-19 cases in some countries, particularly in Europe and the Americas.

"Right now we are extremely concerned by the surge in cases we're seeing in some countries. Particularly in Europe and the Americas, health workers and health systems are being pushed to the breaking point," WHO Director-General Tedros Adhanom Ghebreyesus said at a press briefing.