Viruses, Mycoplasma pneumoniae and bacteria associated with lower respiratory tract disease among infants.

Adenoviridae/isolation & purification Adenoviridae Infections/diagnosis Bacteria/isolation & purification Bronchial Diseases/microbiology Bronchitis/microbiology Chicago Female Humans Infant Infant, Newborn Influenza, Human/diagnosis Male Mycobacterium/isolation & purification Mycobacterium Infections/diagnosis Orthomyxoviridae/isolation & purification Orthomyxoviridae Infections/diagnosis Paramyxoviridae Infections/diagnosis Pneumonia/microbiology Respiratory Syncytial Viruses/isolation & purification Respiratory Tract Infections/microbiology Respirovirus/isolation & purification Serologic Tests Virus Diseases/diagnosis