05-17-2021, 10:44 AM
Pfizer is doing pretty fine from what i know. Actually its developed by Biontech, a German company. Pfizer just manufactures and distributes it. Also Sinovac has been used on a lot of people and it seems to be doing well. The only problematic vaccine i know is Astra Zeneca which caused issues compared to all other vaccines and which had to change its name to avoid the fallout.