2006-10-09 13:14:45 · 6 answers · asked by eligia m 2 in Health ➔ Diseases & Conditions ➔ Infectious Diseases
You've already answered your question. Immune systems vary from one individual to another, and if you're alive today, you're a mutant in one way or another.
Those who survive pass those handy traits on to their children. Those who do not, well, die.
Likewise, pathogens are always mutating (and at a much faster rate, too), so sometimes a disease that was once a small problem becomes very nasty and overwhelms a huge majority of the human immune systems in the area. That leads to the really nasty human die-offs, like the Spanish Influenza that hit right after WWI (and killed more people than the war did...)
HIV did this too, and probably was not transmissible through humans until recently.
Besides a natural immunity to diseases, some people survived the plagues because they were in better overall condition or they lived in conditions that prevented them from being infected in the first place (no rats or fleas around.)
2006-10-09 16:50:49 · answer #1 · answered by Boomer Wisdom 7 · 0⤊ 0⤋
Very strong immune system saved some as it does today from diseases,while some live and others die. Also read some time ago that those who at the onset of the plaque--VIRUS_Bacteria-,right away drank diluted vinegar(proved to strengthen immune system, has a high Potassium and mineral content-not the white but the Brown-unprocessed and back then no white existed) and used vinegar to soak clothes and clean home with(Brown vinegar kills Bacteria,Viruses Mold and Fungi) and right away stayed away from those who had the plaque survived and even those who already had the beginning of the plaque that some were saved with Vinegar.--There were no Antibiotics and even in Battle men would use vinegar to kill bacteria from wounds etc.
2006-10-09 13:25:10 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Well, some people were immune to the plague. Others just lived in an area that was far away enough to stop the plague from spreading.
2006-10-09 13:17:18 · answer #3 · answered by JPH 3 · 1⤊ 0⤋
Just like any other plague some people have an immunity to the virus.
2006-10-09 13:23:30 · answer #4 · answered by noice 3 · 0⤊ 0⤋
it was the flees on the rats that carried the plague.
so no rats in your house no plague.
but at the same time they thought the cats were evil and were getting rid of them which made more rats
2006-10-09 13:20:01 · answer #5 · answered by bmebodymod 3 · 0⤊ 0⤋
WTF???
2006-10-09 13:17:09 · answer #6 · answered by ann.natalie 4 · 0⤊ 0⤋