There are some blind areas. You are not counting people that weren't tested, or, people in different categories that were exposed but didn't got the disease, or people that got the disease previously, but it was asymptomatic or with mild enough symptoms to be noticed.

If 100 unvaccinated people (that really didn't got the vaccine) get exposed in the same way than 100 vaccinated people, the numbers that will get infected would be the same?