The World Health Organization called Monday for a rapid increase in production of the steroid dexamethasone, after British clinical trials found it has life-saving potential for critically-ill coronavirus patients. "The next challenge is to increase production and rapidly and equitably distribute dexamethasone worldwide, focusing on where it is needed most," WHO chief Tedros Adhanom Ghebreyesus told a virtual news conference in Geneva. rjm/apo/pma