Some people can't get vaccinated and yeah, the less people that were vaccinated, the more it spread. Vaccination REDUCES the chances of transmission.
While most people were doing the right thing, you were thinking "fuck it..I'll leave it to them to protect me and others".
"How vaccines work
Vaccines teach your immune system how to create antibodies that protect you from diseases.
It's much safer for your immune system to learn this through vaccination than by catching the diseases and treating them.
Once a vaccine has taught your immune system how to fight a disease, it can often protect you for many years.
Having a vaccine also benefits your whole community through "herd immunity".
If enough people are vaccinated, it's harder for the disease to spread to those people who cannot have vaccines. For example, people who are ill or have a weakened immune system.
By making sure your own vaccinations are up-to-date, you can help protect loved ones who may be vulnerable to infectious diseases."
Vaccines are the most effective way to prevent infectious diseases. This page explains why vaccines are safe to use and how they help protect against potentially serious illness.
www.nidirect.gov.uk