Photo: Wichan Charoenkiatpakul BEIJING: Many countries from China to Indonesia and Brazil rely heavily on Chinese vaccines to inoculate their people against Covid-19, but there are growing concerns about whether they provide enough protection against the Delta variant, first identified in India.
Five out of the seven domestically developed shots in China's mass inoculation scheme are inactivated vaccines.
Despite this, Roque doubted that the recent development in Indonesia will cause the public to develop hesitancy on the Chinese vaccine.
Sinovac Efficacy Against Omicron : 2 Doses A recent showed that the Omicron variant has significant vaccine escape capability in fully-vaccinated individuals.
Several countries which have relied heavily on the Sinovac vaccine have begun giving booster shots developed by Western manufacturers to people fully vaccinated with the Chinese shot.
But Undurraga said vaccination alone did not explain the decrease and pointed to other measures that remained in place, including mandatory masks, a ban on large gatherings and nighttime curfews.