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The World Health Organization's Health Emergencies Programme chief said that it's impossible to predict when the Covid-19 pandemic might be controlled and that it's possible the new coronavirus may be here to stay.
"This virus may never go away. The number of people infected by Covid-19 so far is relatively low," said Dr. Michael Ryan, in a news briefing on Wednesday.
"Without a vaccine, it could take years for the population to build up sufficient levels of immunity to it. I think it's important to put this on the table," he added.
"This virus may become just another endemic virus
