Individual variations and Human herd Immunity

Abstract

Variations in genes ,proteins and/or cells within an individual took part in the overall variations in human herd. Herd variations are facing concurrent, present ,  past or forthcoming infections and/or vaccinations are the invaders. Such invaders are       the stimulants for the immune conversion from naïve B or naïve T or both into effector or memory lymphocytes. The herd immune response to these     invaders can be as; high, moderate low and/or non. CD4+ and CD8+ lymphocytes counts, IL12 P40, as well as S.typhi H specific antibody titers were given as study cases where human herd immunity do operate in which both Gaussian distribution curve and skewing graphs were also evident.

Key Words; Individual ,Herd ,Herd Immunity ,Genes,  Protein ,Major Histocompatability System.