If you hold a grudge, it will only hurt you and God's cause in the end. Grudges come from an unconverted heart and the grudge holder has some sin that needs repentance and victory.
Also, as we are in the second wave of the COVID crisis in America, it is important to remember that Biblical prevention involves attention to health principles. This is a much better approach than a vaccination as a preventive measure according to Job 14:4.

