Microbiology 9th Edition by Laura Black, Jacquelyn Black

Exercise 38

Can Koch's postulates be fulfilled for all viral pathogens? What steps might present difficulties for viral pathogens? For some scientists Koch's postulates still have not been sufficiently ful filled to say that HIV causes the disease syndrome of AIDS. Vis it this website http://www.niaid.nih.gov/publications/hivaids/12.htm and explore more about this issue.