"Conclusion: This study indicates that the occurrence of VZV reactivation is clinically relevant. However, our findings suggest that COVID-19 vaccination is safe, and remains strongly recommended."
https://pubmed.ncbi.nlm.nih.gov/35931613/
Of course there's the obligatory, robotic, throat-clearing that vaccines should still be taken even when they find evidence of a side-effect.
There's enough discussion about this happening after vaccination: https://pubmed.ncbi.nlm.nih.gov/34579250/
"Conclusion: This study indicates that the occurrence of VZV reactivation is clinically relevant. However, our findings suggest that COVID-19 vaccination is safe, and remains strongly recommended." https://pubmed.ncbi.nlm.nih.gov/35931613/
Of course there's the obligatory, robotic, throat-clearing that vaccines should still be taken even when they find evidence of a side-effect.