Columbia subject headings:
Infection--Congresses.
Medical microbiology--Congresses.
Pathogenic microorganisms--Congresses.
Virology--Congresses.
Harvard subject headings:
Infection--Congresses
Pathogenic microorganisms--Congresses.
Pathology, Molecular--Congresses.
Princeton subject headings:
Infection--Microbiology--Congresses.
Pathogenic microorganisms--Congresses.