American Society for Microbiology  Large American based microbiology organisation

The Australian Society for Microbiology This society holds a great annual conference.

The Australian Society for Antimicrobials Clinical microbiology based website based in Australia.

FEMS:- Federation of European Microbiology Societies European centre for microbiology. 

EUCAST  The European Committee on Antimicrobial Susceptibility Testing.

Clinical Virology Network UK based clinical virology website.

CLSI Clinical and Laboratory standards Institute.

Infectious Disease Society of America

Centers for Disease Control and Prevention