Yeah but i think there are pharmaceutical companies that Put down their Flags as their vaccines are having this side effects but not those approved already in which Pfizer is the one who successfully crossed the tests.
also the problem is like our country that supposedly for delivery before the end of this year yet being cancelled for some un expected reasons.
The US just approved another vaccine from Moderna. A lot of approved vaccines were already in the process and supplying the countries that have ordered it.
Astra Zeneca
Pfizer BioNtech
Moderna
Sinovac, et al.