Bacterial antagonism and synergism help maintain the balance of the normal
endogenous nora. The production of bacteriocins by some micro-organisms is
one of the important mechanisms of interference. The role of bacterial inte
rference in upper respiratory tract infections and the effect of this pheno
menon on the eradication of infection is detailed. The infections discussed
include pharyngotonsillitis, otitis media and sinusitis. The effects of an
timicrobial agents on organisms causing these conditions and interactions b
etween pathogens and other bacteria are also described. (C) 1999 Lippincott
Williams & Wilkins.