title: Importance of associated viral and bacterial infections in the production of acute pneumonias.
abstract: Bacteriologic and virologic investigations carried out in a group of 85 patients with acute pneumonia have allowed the determination of the etiologic agent in 52.9% of the cases. Of these, 40% showed combined viral and bacterial infections. Mixovirus infections were frequently associated with staphylococcic ones (7 out of 8 cases) and adenovirus infections with the pneumococcic ones (6 out of 7 cases). The most severe and longdrawn clinical pictures with frequent pleuropulmonary complications (in 22.24% of the cases) had a biphasic evolution in only 6 of the 18 pneumonias of mixed etiology. For their high frequency and their clinical peculiarities, mixed etiology pneumonias might be considered as distinct clinical entities.
mesh_terms: D000208:Acute Disease; D000260:Adenoviruses, Human / Q000276:immunology; D000293:Adolescent; D000328:Adult; D000368:Aged; D000914:Antibodies, Viral / Q000032:analysis; D001419:Bacteria / Q000302:isolation & purification; D001424:Bacterial Infections / Q000382:microbiology*; D006801:Humans; D008875:Middle Aged; D009975:Orthomyxoviridae / Q000276:immunology; D010224:Parainfluenza Virus 3, Human / Q000302:isolation & purification; D011014:Pneumonia / Q000276:immunology / Q000382:microbiology*; D011018:Pneumonia, Pneumococcal / Q000382:microbiology; D011023:Pneumonia, Staphylococcal / Q000382:microbiology; D011024:Pneumonia, Viral / Q000382:microbiology*; D017955:Poliovirus / Q000302:isolation & purification
chemical_list: D000914:Antibodies, Viral