Response to the attached letter "IgA nephropathy and hematuria after getting vaccine for SARS-CoV-2" by H. Daungsupawong and V. Wiwanitkit.

This document is a response to a letter titled "IgA nephropathy and hematuria after getting vaccine for SARS-CoV-2." The authors clarify that although their sample size was small (3 patients), this was consistent with the published series at the time. None of the patients had urinary infections or a history of kidney stones, and they did not exhibit respiratory symptoms suggestive of SARS-CoV-2 infection. The authors emphasize the importance of administering the vaccine to this patient group despite the non-specific side effect of hematuria. There are no conflicts of interest declared. [Extracted from the article]