[theold]

“I’d like to address Sinovac in terms of efficacy, because there is some confusion […] so it is true that the efficacy of Sinovac for the original strain is at 50 percent.  However, that 50 percent was done in a unique Stage 3 clinical trial in Brazil where 100 percent of the participants were healthcare workers assigned to COVID-19 wards,” he said.

“We’re actually lucky that a study was done on a COVID-19 vaccine using that protocol.  I don’t believe that any other vaccine has done that protocol that Sinovac did,” he added.

https://newsinfo.inquirer.net/1478617/si...istributor