[14] A real-world study of ten millions of Chileans who received CoronaVac found it 66% effective against symptomatic COVID-19, 88% against hospitalization, 90% against ICU admissions, and 86% against deaths.

[15] In Brazil, after 75% of the population in Serrana, São Paulo received CoronaVac, preliminary results show deaths fell by 95%, hospitalizations by 86%, and symptomatic cases by 80%.

[16][17] In Indonesia, real world data from 128,290 healthcare workers showed 94% protection against symptomatic infection by the vaccine, beating results in clinical trials.

[5] During the COVID-19 pandemic, China's growing influence by donating vaccines and aid, had prompted US military leaders to initiate a covert propaganda operation.

A senior US military officer involved with the campaign had told Reuters that the US failed to effectively share vaccines with partners, leaving them without much options but to undermine China's diplomatic efforts.

US military leaders took precedence over diplomats, fearing that China's COVID diplomacy might draw South-East Asian countries closer to Beijing.