So basically it's crap

Incorrect, in Brazil it has been tested in doctors and nurses, although the % is low in terms of stopping people from getting the virus, % is high when you look at severe symptoms and deaths.

The problem is that each vaccine has different objectives being measured. If you measure against the ultimate objective - a severe infection, it's equal to Moderna and Pfizer. However, in currently in Colombia and many are getting Sinovac. I have the option of flying to the US to get the mRNA jab which I might do.