The World Health Organization has temporarily halted studying hydroxychloroquine as a potential Covid-19 treatment in its Solidarity Trial due to safety concerns, WHO Director-General Tedros Adhanom Ghebreyesus said during a briefing in Geneva on Monday.
The decision was made after an observational study was published in the medical journal The Lancet on Friday, which described how seriously ill Covid-19 patients who were treated with hydroxychloroquine and chloroquine were more likely to die.

Coronavirus pandemic: Updates from around the world
The coronavirus pandemic has brought countries to a standstill. Here’s the latest updates on Covid-19 cases, deaths, government responses and more.
https://www.cnn.com/world/live-news/coronavirus-pandemic-05-25-20-intl/h_234e00eac8b27199c5a799d7bf6a15a7
https://www.cnn.com/world/live-news/coronavirus-pandemic-05-25-20-intl/h_234e00eac8b27199c5a799d7bf6a15a7