Most likely it is side effect of the vaccine. If fever worsens to more than 102 or lasts more than 10 days, and/or she has vomiting, dizziness, rash, would recommend consultation and also obtaining a COVID test.
Covid infection is possible ( there is very low chance) even after taking one dose of vaccine
Answered2021-04-23 13:35:57
Let others know if this answer was helpful