title: Isolation of viruses from nasopharyngeal secretions: comparison of aspiration and swabbing as means of sample collection.
authors.forename: J R
authors.initials: JR
authors.lastname: Cruz
authors.forename: E
authors.initials: E
authors.lastname: Quiñonez
authors.forename: A
authors.initials: A
authors.lastname: de Fernandez
authors.forename: F
authors.initials: F
authors.lastname: Peralta
mesh_terms: D002675:Child, Preschool; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008828:Microbiological Techniques; D009305:Nasopharynx / Q000382:microbiology*; D012140:Respiratory Tract Diseases / Q000382:microbiology; D014780:Viruses / Q000302:isolation & purification*