Hundreds of millions of people worldwide kicked off the weekend under a coronavirus lockdown, as the global death toll accelerated sharply and the World Health Organisation (WHO) warned young people they were "not invincible".

The virus death toll surged past 11,000 worldwide, with 4,000 alone in worst-hit Italy where the daily number of fatalities has shot up relentlessly over the past week.

"Today I have a message for young people: you are not invincible.

The stay-at-home orders put the three most populous cities in the United States -- New York, Los Angeles and Chicago -- under lockdown.

Gabon confirmed sub-Saharan Africa's second known death, with reported cases across Africa standing at more than 900 and rising fast. | To read full story, visit https://startuparound.com/read/1584774005.0247447/Worldwide-coronavirus-lockdowns-as-WHO-warns-young-people-'not-invincible'?ref=audio_experience