Antimicrobial peptides are key defense molecules adopted by all life forms to prevent infection. They also have other beneficial effects such as boosting immune response anticancer and wound healing. The antiviral effects of antimicrobial peptides have laid the foundations for developing new agents to combat seasonal Flu HIV-1 RSV Zika and Ebola. This eBook is constructed to systematically deal with antimicrobial peptides from a variety of natural sources including fungi plants and animals (inse