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Carriage of Neisseria meningitidis and Neisseria lactamica in infants and children. 1978

R Gold, and I Goldschneider, and M L Lepow, and T F Draper, and M Randolph

Asymptomatic carriage of Neisseria meningitidis and Neisseria lactamica was studied in a total of 2,969 healthy infants and children in Danbury, Conn., between October 1971 and June 1975. The prevalence of N. meningitidis averaged 0.71% during the first four years of life and increased to 5.4% by 14--17 years. Rates of carriage of N. lactamica increased from 3.8% in three-month-old infants to a peak of 21.0% at 18 months and then declined to 1.8% by 14--17 years of age. Of the children who acquired N. lactamica, 66% developed fourfold or greater rises in titers of IgG antibody to groups A, B, and/or C meningococci as determined by immunofluorescence compared with only 5% of control children. Of new carriers of N. lactamica, 40% developed increased titers of bactericidal antibody to groups A, B, and/or C meningococci as compared with 7% of noncarriers. Carriage of N. lactamica may assist in the development of natural immunity to N. meningitidis by induction of cross-reactive antibodies.

UI MeSH Term Description Entries
D007223 Infant A child between 1 and 23 months of age. Infants
D009305 Nasopharynx The top portion of the pharynx situated posterior to the nose and superior to the SOFT PALATE. The nasopharynx is the posterior extension of the nasal cavities and has a respiratory function. Rhinopharynx,Choanae,Nasopharynges,Nasopharynxes,Rhinopharynges,Rhinopharynxes
D009343 Neisseria A genus of gram-negative, aerobic, coccoid bacteria whose organisms are part of the normal flora of the oropharynx, nasopharynx, and genitourinary tract. Some species are primary pathogens for humans.
D009345 Neisseria meningitidis A species of gram-negative, aerobic BACTERIA. It is a commensal and pathogen only of humans, and can be carried asymptomatically in the NASOPHARYNX. When found in cerebrospinal fluid it is the causative agent of cerebrospinal meningitis (MENINGITIS, MENINGOCOCCAL). It is also found in venereal discharges and blood. There are at least 13 serogroups based on antigenic differences in the capsular polysaccharides; the ones causing most meningitis infections being A, B, C, Y, and W-135. Each serogroup can be further classified by serotype, serosubtype, and immunotype. Diplokokkus intracellularis meningitidis,Meningococcus,Micrococcus intracellularis,Micrococcus meningitidis,Micrococcus meningitidis cerebrospinalis,Neisseria weichselbaumii
D002353 Carrier State The condition of harboring an infective organism without manifesting symptoms of infection. The organism must be readily transmissible to another susceptible host. Asymptomatic Carrier State,Asymptomatic Infection Carrier,Inapparent Infection Carrier,Presymptomatic Carrier State,Presymptomatic Infection Carrier,Super-spreader Carrier,Superspreader Carrier,Asymptomatic Carrier States,Asymptomatic Infection Carriers,Carrier State, Asymptomatic,Carrier State, Presymptomatic,Carrier States,Carrier, Super-spreader,Carrier, Superspreader,Carriers, Super-spreader,Carriers, Superspreader,Inapparent Infection Carriers,Infection Carrier, Asymptomatic,Infection Carrier, Inapparent,Infection Carrier, Presymptomatic,Presymptomatic Carrier States,Presymptomatic Infection Carriers,Super spreader Carrier,Super-spreader Carriers,Superspreader Carriers
D002648 Child A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL. Children
D002675 Child, Preschool A child between the ages of 2 and 5. Children, Preschool,Preschool Child,Preschool Children
D003429 Cross Reactions Serological reactions in which an antiserum against one antigen reacts with a non-identical but closely related antigen. Cross Reaction,Reaction, Cross,Reactions, Cross
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000375 Aging The gradual irreversible changes in structure and function of an organism that occur as a result of the passage of time. Senescence,Aging, Biological,Biological Aging

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