We are surrounded, inside and out, by bacteria, viruses, fungi and other microbes. Meanwhile, the spread of infectious microorganisms has threatened millions during recent pandemics. More worrisome has been news that dangerous bacteria are becoming resistant to antibiotics. Is there any hope in winning the war against infectious disease with this growing legion of microbial threats? In "Probiotics - Protection Against Infection" we find clear evidence for probiotics' ability to directly engage and defeat infectious microorganisms. We find new clinical proof of probiotics' ability to specifically boost the immune system while under attack. Here we find the scientific facts separated from the hype and the myths; and the amazing discovery that we can fight fire with fire, as long as we properly arm ourselves with the correct strategies for achieving and nurturing strong probiotic colonies.