Third Time’s The Charm? Brazil Scales Back Efficacy Claims For COVID-19 Vaccine From China (Science Magazine)
Sometimes, science headlines can become a bit political even when that was not the exact design. As most know by now, COVID-19 was said to have begun out of China likely due to a person eating a bat with the disease. Or the bat infecting another animal that was consumed. Wanting to help, China has been developing COVID vaccines. Brazil has been doing trials with a Chinese-made vaccine for the virus, but their announcements on it seem to be conflicting.
Researchers reported that the results of their efficacy trial were not as impressive as they claimed beforehand. They analyzed using stricter criteria than they did previously. This included the vaccine’s ability to work well against ALL cases of COVID-19, including even mild cases. When doing this, their score dropped from 78% to 50% effectiveness. It was assumed that it could offer nearly 100% protection against a disease severe enough to require hospitalization, but that is uncertain now.