Sinovac efficacy against delta variant - Chinese vaccines not as efficient against Delta variant: Researcher

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.

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.