title: Ten and a half years seroepidemiology of Mycoplasma pneumoniae infection in Denmark.
abstract: The study was based on a computerized card index of 9161 patients who had at least one positive blood specimen in the Mycoplasma pneumoniae complement fixation test. A total of 12,562 specimens from these patients had been sent to Statens Seruminstitut from hospitals and general practitioners during a 10.5-year period. The period encompassed a previously described endemic period in a 30-year study of the epidemiological pattern of M. pneumoniae infection in Denmark. The serological data presented support the hypothesis advanced here that a more than sixfold increase of children in day care might have contributed to a change in the epidemiological pattern. The correlation between age and level of specific antibodies, as well as persistence of seropositivity, were also investigated.
authors.affiliation: Neisseria Department, Statens Seruminstitut, Copenhagen, Denmark.
authors.forename: K
authors.initials: K
authors.lastname: Lind
authors.forename: M W
authors.initials: MW
authors.lastname: Bentzon
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000372:Agglutination Tests; D000907:Antibodies, Bacterial / Q000097:blood*; D002648:Child; D002675:Child, Preschool; D003168:Complement Fixation Tests; D003718:Denmark / Q000453:epidemiology; D005260:Female; D006801:Humans; D015994:Incidence; D007223:Infant; D008297:Male; D009177:Mycoplasma pneumoniae / Q000276:immunology*; D011019:Pneumonia, Mycoplasma / Q000453:epidemiology*; D012737:Sex Factors; D013997:Time Factors
chemical_list: D000907:Antibodies, Bacterial