title: Focus on sinusitis. Host-microorganism relation.
abstract: The author reviews the modern insights in host factors which protect from infection and explains how microorganisms such as Streptococcus pneumoniae, Haemophilus influenzae and Streptococcus pyogenes can escape from host-defence mechanisms thus infecting the host.
mesh_terms: D001419:Bacteria / Q000472:pathogenicity*; D006801:Humans; D007111:Immunity, Cellular; D010587:Phagocytosis; D012852:Sinusitis / Q000276:immunology*; D014774:Virulence; D014780:Viruses / Q000472:pathogenicity