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carriage of neisseria meningitidis and neisseria lactamica in a school population during an epidemic period in spain.a study was made of the incidence of neisseria meningitidis and n. lactamica in a school population; 2470 children aged between 5 and 7 years were studied from four schools in alcala de henares (madrid). nasopharyngeal swabs were taken in june, november and march, between 1979 and 1983. in all the surveys except one, the proportion of carriers of n. lactamica was higher than that of n. meningitidis, reaching a ratio of about 2:1 in the complete study. the predominant serogroup of meningococcus f ...19853924995
[meningococcus b serosubtypes causing invasive disease in cantabria [spain] and agreement with the cuban vaccine strain].to determine the serosubtypes of meningococcus b causing invasive disease in cantabria and the percentage of agreement with the cuban vaccine strain, va-mengoc-bc.200414980172
[effectiveness and duration of the immunity of the vaccine against serogroup a+c meningococcus].in 1995 the community of madrid detected an increase in the number of cases of meningococcal disease caused by serogroup c. in 1997 a mass vaccination campaign was carried out in relation to the population between 18 months and 19 years of age. the purpose of this study is to ascertain the immune response produced by the vaccine and its relationship to the age of the subjects.200011031853
[evolution of meningococcal disease in the community of madrid. effectiveness of antimeningococcal a+c vaccination].in 1997 (between 22 september and 14 november) an a + c meningococcal mass vaccination campaign was carried out in madrid, targeting the age group of from 18 months to 19 years of age, in the face of an increase in the number of cases of meningococcal disease caused by serogroup c occurring in the 1996-97 season. this study forms a part of the impact assessment of that campaign.200011031849
[meningococcal disease in spain, 1990-1997. change in its epidemiological pattern].in spain, the presentation of meningococcal disease in the 1980s was closely linked to the predominance of n. meningitidis serogroup b. this situation changed at the beginning of the 1990s, observing a growing trend of serogroup c strains in the isolation procedures carried out in some areas of the country, together with an increase in the incidence of the disease starting in the 1995-1996 season. the purpose of this study is to characterise the epidemiological pattern of meningococcal disease i ...200011031848
[prevalence of neisseria meningitidis carriers in a school population in the metropolitan area of madrid].the prevalence of healthy carriers of neisseriae meningitidis has been addressed by studying oropharynx samples of 1,172 schoolchildren in madrid. the sample design took into consideration social status, age and sex. the total prevalence of healthy carriers was 2.30%, with 66% or these in the six year old age group (rr = 2.88, p < 0.005). serotype b was found in 74% of the carriers, again mainly in the six year old age group, and 18.5% were serotype a, with most of them being found in the fourte ...19938239222
[estimation of neisseria meningitidis carriers among healthy subjects in contact with patients with meningococcal sepsis in the madrid area].we have studied 238 asymptomatic school children which had come in contact with one of 5 cases of meningococcal sepsis, which occurred between january 1992 to may 1992. the study was performed at the corresponding schools and oropharynx samples were immediately put into thayer-martin agar plates. the cases were identified as serotype c in three occasions and type b in two cases. the total carrier prevalence was 1.68%, all of which were serotype b. we did not find a significant relationship betwe ...19938239203
[hospital admissions for meningococcal infections in madrid, spain (1997-2005)].neisseria meningitidis infection causes an important morbidity and mortality in spain. our study aims to estimate the burden of hospital admissions for meningococcal infection in spain during a nine-year period (1997-2005) by analyzing the spanish hospital surveillance system.201020036397
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