Track topics on Twitter Track topics that are important to you
We determined the immunogenicity of conjugated Haemophilus influenzae type b and pneumococcal vaccines by quantitative analysis of the antibody response in asplenic patients. To that end, we vaccinated 92 patients with a conjugated Hib vaccine and 54 received two doses of conjugated pneumococcal vaccine (PCV7), followed at six months by a plain polysaccharide pneumococcal vaccine (PPV23). Antibody concentrations were measured before and three weeks after vaccination. After one dose of pneumococcal conjugate vaccine, 46% of the patients reached the antibody threshold of ≥ 1.0 μg/mL for all 7 tested vaccine serotypes. This percentage rose to 54% after the second dose of PCV7 and did not increase further after PPV23. Over 90% of patients had antibody concentrations ≥ 1.0 μg/mL for at least 5 out of the 7 conjugated pneumococcal serotypes after 2 doses of PCV7. For serotypes, included in the PPV23 vaccine only, 25% (PPS3)-100% (PPS19A) of the patients reached antibody concentrations ≥ 1.0 μg/mL after one dose of PPV23. For Hib, 97% of the patients reached the threshold concentration of ≥ 1.0 μg/mL after one dose of vaccine. It can be concluded that the majority of asplenic patients had a sufficient response to conjugated vaccines against Streptococcus pneumoniae and Hib, reflected by a ≥ 1.0 μg/mL antibody response. Inclusion of conjugated pneumococcal polysaccharide vaccines might be of additional value in the vaccination schedule for asplenic patients because of their high immunogenicity.
Department of Internal Medicine, St. Antonius Hospital Nieuwegein, The Netherlands. firstname.lastname@example.org
This article was published in the following journal.
Haemophilus influenzae type b (Hib) vaccine and pneumococcal conjugated vaccine (PCV) have been widely used since 2010 in Japan when both vaccines were supported by the regional governments, and they ...
There is relatively little data on the etiology of bacterial infections in patients with sickle cell anemia (SCA) in West Africa, and no data from countries that have implemented conjugate vaccines ag...
Immunogenicity and Safety Of 10-Valent Pneumococcal Non-Typeable Haemophilus influenzae Protein D Conjugate Vaccine (PHiD-CV) Administered to Children with Sickle Cell Disease Between 8 Weeks and 2 Years of Age: A Phase III, Open, Controlled Study.
Immunogenicity, safety and reactogenicity of the 10-valent pneumococcal non-typeable Haemophilus influenzae protein D conjugate vaccine (PHiD-CV) were evaluated in children with sickle cell disease (S...
The invasive pneumococcal diseases (IPDs) caused by Streptococcus pneumoniae pose an enormous threat to children under 5 years of age. However, routine use of pneumococcal conjugate vaccines could a...
Pneumococcal diseases are associated with a significant clinical and economic burden. The 7-valent pneumococcal conjugate vaccine (PCV-7) has been used for the immunization of newborns against invasiv...
This study will evaluate the safety and immunogenicity of booster doses of the two vaccines used to prevent Haemophilus influenzae type b infections in children 12-18 months of age.
Haemophilus influenza type b (Hib) remains a serious global health threat associated with high mortality and morbidity in young children. In China, The overall impact of Hib-related infect...
Study in Infants (6-12 Months) Comparing Two Doses of a Monovalent Glycoprotein-Conjugated (Diptheria Toxin -CRM197) Vaccine Versus a Tetanus Toxoid-Conjugated Vaccine Available for the Prevention of Haemophilus Influenzae Type b Infections in China
This study will evaluate the safety and efficacy of two doses of two commercially available vaccines used to prevent Haemophilus influenzae type b infections in children 6-12 months of ag...
This study will evaluate the safety and immunogenicity of single dose of two commercially available vaccines used to prevent Haemophilus influenzae type b infections in children 13-59 mon...
The study will evaluate the safety and immunogenicity of a haemophilus influenzae type b conjugate vaccine (Hib) in Healthy Children 2 Months to 5 Years of Age who have not been previously...
Vaccines or candidate vaccines containing antigenic polysaccharides from Haemophilus influenzae and designed to prevent infection. The vaccine can contain the polysaccharides alone or more frequently polysaccharides conjugated to carrier molecules. It is also seen as a combined vaccine with diphtheria-tetanus-pertussis vaccine.
A type of H. influenzae isolated most frequently from biotype I. Prior to vaccine availability, it was a leading cause of childhood meningitis.
A pneumococcal vaccine which 7 pneumococcal serotypes (6B, 14, 19F, 23F, 18C, 4, 9V), each conjugated individually to the outer membrane protein complex of NEISSERIA MENINGITIDIS.
Semisynthetic vaccines consisting of polysaccharide antigens from microorganisms attached to protein carrier molecules. The carrier protein is recognized by macrophages and T-cells thus enhancing immunity. Conjugate vaccines induce antibody formation in people not responsive to polysaccharide alone, induce higher levels of antibody, and show a booster response on repeated injection.
Vaccines or candidate vaccines used to prevent infections with STREPTOCOCCUS PNEUMONIAE.
A vaccine is a biological preparation that improves immunity to a particular disease. A vaccine typically contains an agent that resembles a disease-causing microorganism, and is often made from weakened or killed forms of the microbe, its toxins or one ...