Scientists had been waiting for more details about the two 疫苗, even though they already are being used in many countries, and one recently won the backing of the World Health Organization for emergency use.
那个报告, published online in the Journal of the American Medical Association, concluded the two 疫苗 are about 73% 和 78% 有效, as Sinopharm has previously claimed.
Researchers from Sinopharm and its local partners in the 中东 say the trial involved around 40,380 participants with the company’s two 疫苗 — one developed by the Wuhan Institute of Biological Products and the other by the Beijing Institute of Biological Products — and a placebo. The trial was carried out in four countries — Bahrain, 阿拉伯联合酋长国, Egypt and Jordan. 然而, the study provided data for just Bahrain and the UAE.