The human body is protected against infections by the immune system. The disease occurs when the normal function of tissue is impaired. Health organizations have for a long time tried to understand all causal agents of diseases as fight strategies against these agents including understanding surviving strategies, their cycle, and multiplicity once they infect a human being. This has facilitated discovery of therapeutic drugs for various diseases (Klepac et al., 2013). Vaccination against different diseases has led to the elimination of historically deadly disease such as smallpox. Treatment is applied equally against bacterial, viral, fungal and protists disease (Field et al., 2004). Generally, vaccination is effective against bacterial
