For comparison, around 50 million people are thought to have died in the 1918 Spanish Flu pandemic, and 36 million have died of HIV since the epidemic began in the 1980s.
Samira Asma, WHO assistant director general for data, analytics and delivery for impact, who co-led the calculation process, said data was the "lifeblood of public health" needed to assess and learn from what happened during the pandemic. She called for more support for countries to improve reporting."Too much is unknown," she told reporters in a press briefing.
(Reporting by Jennifer Rigby; Additional reporting by Leroy Leo in Bengaluru; Editing by William Maclean and Hugh Lawson)