title: Synergism between respiratory viruses and bacteria.
mesh_terms: D000818:Animals; D001407:Bacillus; D001991:Bronchitis / Q000209:etiology; D002908:Chronic Disease; D004217:Distemper Virus, Canine; D015186:Hominidae; D006801:Humans; D007239:Infections / Q000150:complications*; D008171:Lung Diseases / Q000209:etiology / Q000473:pathology; D009975:Orthomyxoviridae; D012140:Respiratory Tract Diseases / Q000209:etiology*; D013291:Streptococcus; D013296:Streptococcus pneumoniae; D013552:Swine; D014777:Virus Diseases / Q000150:complications*