Microbes and humans At lest two questions here Very few microbes are How to identify a always pathogenic pathogen? -Koch's postulates Many microbes are potentially pathogenic Under what condition? Most microbes are opportunistic infection never pathogenic ()Microbes and humans Very few microbes are always pathogenic Many microbes are potentially pathogenic Most microbes are never pathogenic Under what condition? -Opportunistic infection How to identify a pathogen? -Koch's postulates At lest two questions here