More than 15 million new cases reported globally last week
More than 15 million new COVID-19 cases were reported globally last week, according to the World Health Organization.
"By far the most cases reported in a single week, and we know this is an underestimate," WHO Director-General Dr. Tedros Adhanom Ghebreyesus said Wednesday.
He said this "huge spike" is driven by omicron.
"While omicron causes less severe disease than delta, it remains a dangerous virus, particularly for those who are unvaccinated," Tedros warned.
WHO officials said new vaccines may be needed for different variants, and until those vaccines are developed, the current vaccines may need to be updated.
-ABC News' Christine Theodorou