In what ways could the Black Death have led to improvements in health in surviving populations?

Question

In what ways could the Black Death have led to improvements in health in surviving populations?

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Answer 1

To add, the plague did lead to a form of generational "immunity". We note that the plague would hit it earnest in about 20 year intervals (if we look at, say, the Byzantine Empire). Some scholars surmise this may to due to surviving populations developing resistance to Y. Pestis. This immunity was not necessarily passed down generationally though, only essentially within the living memory of one generation. Although certainly possible for a mother to pass the antibodies to a child, the reality is that this is not a lasting form of immunity and only works as long as the child is breastfeeding. The disease, so long as rats (the vector) itself were present, would never truly go away, its just that those who survived would not be recipients of another round of infections. But population migration, and subsequent offspring, would not be protected, and thus we see a new round of epidemic happen.

Answer 2

When diseases happen, the human body evolves to survive and build a resistance to certain illnesses. Due to modern technology a disease like the black plague would hardly be a threat in today's society. The surviving populations of the black death most likely built a resistance, or immunity to the disease to protect themselves. The immune system can protect the body from harmful bacteria, and since these parties survived the black death, their immune systems know how to fight off such diseases. In today's medicine, a disease like this can easily be treated with antibiotics.