I see the stats in the Public Health Ontario link you posted....
So not that long ago, this link was posted here on FR when measles was being discussed...it is a medical paper in the Journal of Clinical Virology https://www.sciencedirect.com/science/article/abs/pii/S1386653224000581
“Shedding of measles vaccine RNA in children after receiving measles, mumps and rubella vaccination”
Does this explain what happened in Waterloo? There were a few cases of measles which caused a big push on getting vaccinated which resulted in shedding which in turn caused an ‘outbreak’ amongst all the remaining folks who were not vaccinated or otherwise had immunity? According to this link, “Shedding of measles vaccine RNA is not uncommon and vaccine RNA can be detected in the nasopharyngeal samples up to 29 days post MMR.”
...or otherwise had immunity?
~~~~~~~~~~~~~~~~~
Should have said “... or otherwise did NOT have immunity.”