Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Chinese-made COVID-19 Vaccine Nearly 90% Effective, UAE Says VOA News One day after Britain became the first Western nation to begin mass COVID-19 vaccinations, the United Arab Emirates says a Chinese-made vaccine has proven to be 86% effective in preventing moderate and severe cases of the disease. The Emirates' Health Ministry announced the news Wednesday about the vaccine developed by China's state-owned pharmaceutical company Sinopharm. .