Say person got covid vaccine several months ago (say one of Chinese vaccines), is it safe to get flu vaccine?
Best info I found was from CDC
While limited data exist on giving COVID-19 vaccines with other vaccines, including flu vaccines, experience with giving other vaccines together has shown the way our bodies develop protection and possible side effects are generally similar whether vaccines are given alone or with other vaccines.
But this is answer to a question about getting those vaccines together (at the same time).
I am not sure how different the answer is if person was already vaccinated against covid several months ago?