I got sick with a cold. I started to feel better then my wife got sick with a cold. What’s preventing me from getting sick from the cold that she has now in the future, just like she got sick from my cold and then she getting sick again from my “next cold”, etc — like an infinite loop of colds?
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Your body produces anti-bodies that specifically match what you are sick with. These take a few days to come online but they are so effective they will both cure your current illness and prevent you from getting sick with that illness in the next few months.
That’s basically why vaccines work, they just trick your body into producing immune cells that match an invader that isn’t actually harmful so when the real version comes along your body is ready to recognize and fight it immediately.
You’ll have anti bodies for that strain – if you just had it your body will react pretty much straight away not giving the virus a chance to replicate. It is possible to re-infect each other however. But overall you both act like a singular host if you’re together and eventually both have antibodies so the virus can no longer spread.
There’s a trillion versions of the common cold.
If you get version 100895B and give that to your wife, your white blood cells are able to retain that and cover any additional times you get it.
You pass along the same cold to your wife, and now you can never get that same version of the cold.
Your immune system is pumped up to an incredible degree, and they’re actively looking out and pummeling the cold viruses that’s causing your symptoms. Your white blood cells WBCs are like cops and they are walking around with mugshot of the cold viruses, battering any they find on sight.
The first time you caught the cold, your WBC police station just had some old fat cop left on his own on desk duty, the viruses got in and ran amok, trashed the place before the one old cop got off his ass and started calling in the SWAT teams.
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