So far COVID-19 vaccines made by Pfizer, AstraZeneca and Johnson & Johnson have received WHO approval, which is a signal to national regulatory authorities on a product's safety and efficacy.
The WHO committee of technical experts were on Monday reviewing the COVID-19 vaccine of Chinese drugmaker Sinopharm and is due to review the Sinovac product at its next meeting on May 3, according to the WHO.
Stephane Bancel, Moderna CEO, told an event last Friday that it was on track to make up to 1 billion doses of its COVID-19 vaccine this year and 1.4 billion next year.
"We're in the final stretch to get an agreement with COVAX," Bancel said, referring to the vaccine-sharing facility run by the GAVI Vaccine Alliance and WHO to bring doses to lower income countries.