Quote from: libertasbella on September 06, 2021, 11:29:54 PM

Hey, I'm not trying to argue with you but I am curious and you seem to know about these things: Why don't I need to take multiple polio shots throughout my lifetime, and why can't I still get polio after taking a single vaccine for it?

polio doesnt spread from breathing. it spreads by unsanitary touching and eating
polio is most severe in babies.toddlers.

having polio as a childhood vaccine protects the kids most. as they are the ones that need it
then. as kids 'age out' of the vulnerable category the need for a vaccine is much lower.
so less/no need for booster shots for adults

there is also some chemistry, biology and physics involved with the way the polio does things in the body(passing many defence mechanisms before getting to the spinal nerve. offering many opportunities for body to defend)..

where as covid inhaling is then straight to the target cell in lungs meaning not many defence points the body has before its already at target site.
also covid affects the older population most. meaning the older you are the more you need protection. and as nature goes. everyone gets older.

yep thats right teenagers/adults are less physically harmed by polio. and teenagers/adults are less likely to drink, touch, eat things that are unsanitary things so as they become no longer todlers their own risks are diminished. and even if they still are unsanitary the harms are diminished.

where as with covid. the more you live life the more vulnerable you become. where just having the wrong person breathing on you is a risk. and your body doesnt have many prevention defences to stop it before getting to the lungs.

you cant really compare the two viruses because their target cells are different. their population groups are different. their transmission methods are different. and their passage in the body are different