posted by .

why a disease that was once on the decline might re-emerge?

  • biology -

    People could lose their immunity or new strains of the disease may develop.

  • biology -

    due to the storage of hypnozoits and sporozoits stages of parasites(dorment stage)

  • biology -

    It could be new strains that mutate so that they are not recognizable by the antibodies we developed to the previous strain (the flu does this year after year). Another reason is some people, though there isn't ANY evidence supporting this, believe that vaccinations give autism. Therefore there is a high percentage of babies not vaccinated for diseases we once thought were eradicated in the US. This sets the stage for communicability between these unvaccinated children in deadly diseases such as smallpox (a crime I personally believe should be gross negligence on part of the parents).

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. biology

    Genetic problem Schilder's disease, which causes a progressive degeneration of the nervous system leading to death at about two years of age, behaves as a simple autosomal recessive trait. If a couple loses their first two children …
  2. biology / CELEISTINE

    describe the genetics of the huntigton disease a. what chromosomes are affected?
  3. AP Biology

    In the exponential model of population growth, does the growth rate remain constant, decine, or rise and then decline?
  4. biology

    1. Cystic Fibrosis is due to abnormal mucus-secreting tissue. Abnormal pancreatic secretions and respiratory problems will occur. This is an autosomal recessive disease. The mother and father are carriers for the disease. A. What is …
  5. biology

    Consider the pedigree below. This pedigree represents a family with a rare genetic disease. Note two very important assumptions: Individuals who marry into the family may carry a disease allele. The disease is completelely penetrant. …
  6. Biology Raynaud's Disease

    Hey im doing a powerpoint presentation on this raynaud's disease, and could someone please give me some good sites to go through to get info abt this and please mention anything you know about the raynaud's disease as well, thanks.
  7. Biology please help

    I have a project due tomorrow and i cant find a good place to start. Cardiacmuscle disease is a disease that is a result of the cytoskeleton not functioning properly. I cant find anything on cardiac muscle disease. THIS IS NOT CARDIOMYOPATHY
  8. Human and social biology

    how does an infection disease differ from a deficiency disease?
  9. Biology

    A couple has a child with an autosomal recessive form of glycogen storage disease, a deficiency of a lysosomal enzyme. An enlarged liver and heart and weak muscles cause the baby to die from heart and lung failure at 20 months. Now …
  10. probability

    Consider a medical screening excersis for a disease that in the case that indicte that 5 people of 1000 people screenedhave the disease.the screening process is known to give a false positive 3% at times and a false negative 1% at …

More Similar Questions