The COVID-19 vaccine helps protect individuals from getting severely ill with COVID-19. 

Side effects should go away a few days after vaccination.

Adverse effects that could cause a long-term health problem are extremely unusual following any vaccination, including the COVID-19 vaccine. 

1
2
3
4
5
6
7

Sources:

Possible Side Effects After Getting a COVID-19 Vaccine

Selected Adverse Events Reported after COVID-19 Vaccination