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Diphtheria toxin IgG levels in military and civilian blood donors in Rio de Janeiro, Brazil BJMBR
Speranza,F.A.B.; Ishii,S.K.; Hirata Jr.,R.; Mattos-Guaraldi,A.L.; Milagres,L.G..
Serologic data on diseases that are preventable by vaccines are necessary to evaluate the success of immunization programs and to identify susceptible subgroups. In the present study, we determined serum IgG levels against diphtheria toxin of military and civilian blood donors (N = 75; 69.3% males and 30.7% females) aged 18-64 years, from the Brazilian Army Biology Institute, Rio de Janeiro, using a commercial diphtheria kit (Diphtheria IgG ELISA; IBL, Germany). Most (63%) unprotected military donors were from the older age group of 41 to 64 years. In contrast, the majority (71%) of young military donors (18 to 30 years) were fully protected. About half of the military donors aged 31 to 40 years were protected against diphtheria. Among the civilians, about...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Diphtheria protective antibodies; Military personnel; Blood donors; Age influence.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2010000100017
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Seroprevalence of bactericidal antibodies against serogroup B and C Meningococci in a University Hospital BJMBR
Gioia,C.A.C.; Lemos,A.P.S.; Gorla,M.C.O.; Mendoza-Sassi,R.; Figueredo,B.S.; Ballester,T.; Von Groll,A.; Wedig,B.; Ethur,N.V.; Bragança,L.; Silva,P.E.A.; Milagres,L.G..
Meningococcus serogroup B (MenB), clonal complex 32 (cc 32), was the Brazilian epidemic strain of meningococcal disease (MD) in the 1990’s. Currently, meningococcus serogroup C (MenC), cc 103, is responsible for most of the cases of the disease in Brazil. The aim of this study was to investigate the seroprevalence of bactericidal antibody (SBA) against representative epidemic strains of MenC, (N753/00 strain, C:23:P1.22,14-6, cc103) and MenB, (Cu385/83 strain, B:4,7:P1.15,19, cc32) in students and employees of a university hospital in the State of Rio Grande do Sul (RS, Brazil). A second MenC strain (N79/96, C:2b:P1.5-2,10, cc 8) was used as a prototype strain of Rio de Janeiro’s outbreak that occurred in the 1990’s. Our previous study showed a 9% rate of...
Tipo: Info:eu-repo/semantics/report Palavras-chave: Neisseria meningitidis; Bactericidal antibodies; Meningococcal carrier.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000500607
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Short-term and long-term antibody response by mice after immunization against Neisseria meningitidis B or diphtheria toxoid BJMBR
Silva,G.P.; Cruz,S.C.; Cruz,A.C.; Milagres,L.G..
Serogroup B Neisseria meningitidis (MenB) is a major cause of invasive disease in early childhood worldwide. The only MenB vaccine available in Brazil was produced in Cuba and has shown unsatisfactory efficacy when used to immunize millions of children in Brazil. In the present study, we compared the specific functional antibody responses evoked by the Cuban MenB vaccine with a standard vaccine against diphtheria (DTP: diphtheria, tetanus, pertussis) after primary immunization and boosting of mice. The peak of bactericidal and opsonic antibody titers to MenB and of neutralizing antibodies to diphtheria toxoid (DT) was reached after triple immunization with the MenB vaccine or DTP vaccine, respectively. However, 4 months after immunization, protective DT...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Serological memory; Antibody recall response; Booster immunization.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000200148
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