WHO warns new Covid variants could emerge that are fully resistant to vaccines as pandemic drags on
World Health Organization (WHO) Director-General Tedros Adhanom Ghebreyesus talks during a daily press briefing on COVID-19 virus at the WHO headquaters in Geneva on March 11, 2020. Fabrice Coffrini | AFP | Getty Images The World Health Organization warned Wednesday that new coronavirus variants could emerge during the pandemic that render the current vaccines useless.…