BCG revaccination was introduced in Brazil in the mid-90's but no study has evaluated vaccine coverage through direct assessment of the scar. BCG scars were assessed in 2,785 public school adolescents, aged 13 to 14 years, in Southeastern Brazil, between September 2001 and May 2002. The prevalence rate of revaccination was 64.3% (95% CI: 62.5-66.0). Despite the efforts to implement and sustain ...

BACKGROUND The low prevalence of measles antibody in human immunodeficiency virus (HIV)-infected children after immune recovery as a result of highly active antiretroviral therapy increases the risk of morbidity and mortality from disease. The objective of our study was to evaluate the efficacy and safety of revaccination with measles, mumps, and rubella (MMR) vaccine in HIV-infected children w...

The transfer of antirabies immunoglobulins in cows that were prime vaccinated and cows that were revaccinated against rabies correlated to the serum titers in their offspring was evaluated. The results demonstrated that revaccination against rabies during pregnancy induces neutralizing antibody titers at a protective level that are transferred directly to calves through colostrum and reinforce ...

BACKGROUND Live vaccines against measles (MV), tuberculosis (BCG), polio (OPV) and smallpox reduce mortality more than explained by target-disease prevention. The beneficial nonspecific effects (NSEs) of MV are strongest when MV is given in presence of maternal antibodies. We therefore hypothesised that revaccination in presence of prior immunity enhances beneficial NSEs. METHODS Literature s...

The article comments on the inherent difficulties of complex post-HSCT revaccination program and expected with COVID-19 vaccination HSCT recipients in troubled pandemic scenario.

Results are presented for the large-scale use of a tissue vaccine, inactivated with beta-propiolactone and containing aluminium hydroxide adjuvant, against viral haemorrhagic disease of rabbits. The kinetics of haemagglutination-inhibiting antibodies over eighteen months, the response of vaccinated animals to challenge infection with field virus between six and fifteen months after vaccination,...

To assess the interval since the last revaccination against tetanus the persistence of antibodies was determined using ELISA test in 128 subject. Levels of antibodies against tetanus higher than the protective level of 0.1 IU/ml were found not only in those revaccinated less than ten years ago, but also in those revaccinated more than ten years before. With increasing length of the interval sin...

Hematopoietic stem cell transplant (HSCT) recipients should be routinely revaccinated after transplantation. We evaluated the difficulties met in the revaccination program and how a prospective and tailored follow-up could help to overcome these obstacles. HSCT recipients (n=122) were prospectively followed up and categorized into Group 1 (n=72), recipients who had already started the revaccina...

background: decay of vaccine–induced antibody titres without boosting of the wild measles virus has been well documented. revaccination against measles has reduced the prevalence of the disease worldwide. revaccination may cause ige induced anaphylaxis. objective: to study measles igg antibody in revaccinated populations and its relation to ige induced hypersensitivity. methods: blood samples w...