Multiple countries (e.g. Chile) recorded a rising case number after commencement of Sinovac vaccination, which were opposite to those regions using other vaccines. Now we have hundreds of vaccinated healthcare workers being infected, some require hospitalization. Aren't these reports sufficient to question the effectiveness of the vaccine, especially when the company refuses to formally publish data?
Of course the vaccine works. Like I've repeated again and again, Sinovac is better than nothing and I fully understand why it is a promising option (or the only option) for less wealthy countries. I don't blame them. I would have done the same if I were in the same position. What I'm accusing are those irresponsible companies, which fail to conduct a proper clinical trial and have no intention to perform follow-up study. They, together with the Chinese government, define a new low standard in the approval of medical intervention. It's pathetic to see people have to use unknown sources to support a vaccine, like
@George Owen in #58210.
Imagine hundreds of healthcare workers, who thought they were protected, are actually infective and continue to serve patients, including the immunocompromised? It's more than fair to say the healthcare system is endangered. These underperforming vaccines, together with underperforming diagnostic kits, may be regarded as life-savers in the short term. But in the long run, they are the major obstacles in ending this pandemic.