“…Since last quarter of 20th century, there has been resurgence of infectious diseases and the world remains in transition by the fact that certain infectious diseases (AIDS, avian influenza, Ebola, Marburg, cholera, Rift Valley fever, typhoid, tuberculosis, leptospirosis, malaria, chikungunya, dengue, Japanese encephalitis) have emerged or reemerged while situations with others (guinea worm, smallpox, yaws, poliomyelitis, measles, leprosy and neonatal tetanus) have declined significantly. 3,4 Zoonoses-transmission of infectious agent from animals (wild and domestic) to humans constituted more than two-thirds of emerging infections. Contact among wild animals, domestic animals and people is another driving force involving the interaction between naïve population groups that induces the emergence of new diseases.…”