GENEVA, Feb. 5 (Xinhua) -- Two Chinese vaccines are "in very advanced stage" of the World Health Organization (WHO) Emergency Use Listing Procedure (EUL) assessment, an official from the WHO said on Friday. The vaccines, produced by Sinovac and Sinopharm, are among the four vaccines in very advanced phase of approval, said Mariangela Simao, assistant WHO Director-General for Access to Medicines, Vaccines and Pharmaceuticals, at a press conference. A team of experts from the WHO are now already in China, and they "will start inspections next week" as they are currently in quarantine, she said. This could bring an approval for the vaccine in a relatively short timeframe as Sinovac and Sinopharm have completed several Phase 3 trials, as shown by a public document weekly updated on the WHO website.