In fact it does stop you contracting it and therefore spreading it. You should have written it doesn't "always" stop you getting it. Thus, the vaccines limits the spread. HELLO! EVERYONE OUT THERE READING THIS you can now lay that fact to bed in your mind.
What **** out there would prefer getting severe disease to mild disease. Tell me. You?
Also have the honesty to either address the demolition I made of your lifestyle diseases comparison, or concede it. Conceding by omission isn't good enough for me, I like to grind faces into the dirt.
Apologies for my rough treatment but lives are at stake here.