https://www.ctvnews.ca/politics/prime-minister-justin-trudeau-gets-covid-19-booster-shot-at-ottawa-pharmacy-1.5727288
That's the way this works. Your immune system is actually weakened for a short time after any of the shots.
https://www.14news.com/2022/01/31/canada-pm-trudeau-tests-positive-covid-19/