@Dutertenomics They ordered Pfizer, Moderna and Sinovac even before data on efficacy were known. This is a strategy to cover all groups if one vaccine type may not be suitable
Don't forget that doctors and 'medical experts' used to promote smoking, heroin, and sugary soda.
Don't forget 'The Food Pyramid', the low fat craze, the high fat craze, and the low carb craze.
Scientists and doctors can be bought just like politicians.