JOHN H. PLOUSSARD

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Various immunological parameters were measured in serum, middle ear fluid (MEF), and lymphocytes from peripheral blood and MEF of infants with acute otitis media due to S. pneumoniae or H. influenzae. Approximately half of 131 patients had IgE specific antibody to the infecting bacterium as determined by the indirect fluorescent antibody (IFA) technique.(More)
We studied the incidence of exudative otitis media in 488 patients followed up from birth. Forty-nine percent (240) of the patients had their initial episode of otitis media in the first year of life and only 12% (56) in the second year of life. Thereafter, the incidence decreased steadily. Patients having six or more episodes of otitis media before age 6(More)
Tympanocentesis was performed on 70 infants who had otitis media during the first six weeks of life. The bacteria isolated from their middle-ear effusions were Streptococcus pneumoniae (13 patients), Neisseria catarrhalis (11 patients), Hemophilus influenzae (ten patients), Enterobacteriaceae (four patients), Staphylococcus aureus (four patients),(More)
The bacteriologic findings of 1205 episodes of pneumococcal otitis media are analyzed. Capsular types 6, 14, 19 and 23 have been found to account for more than half the initial and subsequent infections of the middle ear. Initial infection has been shown to be related to age, and recurrent infection with pneumococci of heterologous capsular types has been(More)
In a study of the efficacy of pneumococcal capsular polysaccharide vaccines in preventing otitis media due to Streptococcus pneumoniae, 179 infants were randomly assigned to receive either a "target" vaccine containing serotypes 1, 3, 6, 7, 14, 18, 19, and 23 (which account for most cases of pneumococcal otitis media) or a control vaccine containing(More)
Immunoglobulin concentrations were studied in 255 specimens of middle ear fluid (MEF) from 165 episodes of acute otitis media in children. There were significant amounts of all three major immunoglobulins (Ig) in MEF, the mean concentration of IgA being 39 mg/100 ml, of IgM 63 mg/100 ml, and of IgG 383 mg/100 ml. Secretory component was present in all 10(More)