Jenn

Okay, sorry, you will need to stare at it for a bit.

The key takeaway is that the blue areas, which represents measles cases, almost perfectly avoids the most populated areas, red, and are full of green dots, where the Mennonite and Amish settlements are.

Let's look at this another way.

Here's a Public Health Ontario COVID report from April 2022, that is after vaccinations have been available for a while.

Pages 8 to 10 include comparable charts on cases per 100,000 people broken down by public health unit.

It's relatively stable between foos, and larger in city centres compared to rural settlements.

This makes sense, because urban settlements are by definition denser, which means it's easier for viruses to spread.

There's an image here.

Here are the outbreaks plotted against each other, if you're curious.

Notice that the same five public health units no one has heard of are outliers again, which is what you would expect.

There's an image here.

Also note the different degrees of variance in cases per 100,000 people in a health unit.

COVID cases per 100k ranged from about 4,000 to 11,600 across health units, which is roughly a 3x difference.

The measles cases were actually incredibly discontinuous across units.

Many units had literally zero cases, some had under 30 cases per 100,000 people, then there's a huge gap, and then there's five regions that had over 100 cases per 100,000 people.

For the statistically inclined, the coefficient of variation, standard deviation divided by mean, expressed as a percentage, was about 25% for COVID and 193% for measles, which is almost 8 times higher.

If these numbers mean nothing to you, don't worry about it.

The point is just that COVID spread relatively evenly and measles did not.

Lastly, here is some incidental info from some July 2025 coverage on the outbreak in St.

Thomas, a smaller city, in that vertical belt of green dots across central southern Ontario, in the PHU Southwestern Public Health which is the one with the most cases.