Depends on ur dfn. Pernicious anemia can be used to describe a heriditary condition where you lack the cofacter needed to absorb b12. This may not emerge as a problem until older. If you develop a condition where you loose the absorbtive surfaces of the small intestine thru surgery or disease, you can acquire the problem. A lack of B12 in the diet may cause anemia some will label pa.
No! Not contagious!
No. Pernicious anemia is caused by vitamin b-12 deficiency; therefore, it is not contagious and does not spread from person to person.