What has struck me most about Epidemiology, are the qualifications needed to be someone pursuing a career in it.
It seems like an Epidemiologist is most likely to be a doctor with some knowledge of statistics. On the contrary, I would have thought that a statistician/operations research person with domain knowledge of medicine would be a lot better suited to study epidemiology.
A lot of the existing models also seem really naïve for something an entire field depends on. Tradeoffs between human life lost due to the disease and effective human lives lost due to economic downturns seem entirely unstudied.
Czechia's actions of forcing people to using masks seems to have worked amazingly well for flattening out the curve. The "science" not seems to support it, and official recommendations are now moving back to recommending masks for all. The popular hypothesis for this, is that it stops nonsymptomatic carriers from being spreaders.
Now this sounds like a fairly obvious thing to realize, and to an extent, existing models should have caught this a lot earlier.
I grew up as a kid with an almost religious belief in Science. Over time, I have come to realize that a lot of our sciences are at best empirical and at worst entirely unverifiable. I am a 100% certain, that in a 100 years, we will look at medicine and nutrition of the 2000s, the way we look at humors and blood letting.