Whether gestational immunization of HIV-infected mothers with the 23-valent pneumococcal polysaccharide vaccine (PPV) confers maternal and infant early life, passive protection is not known. We evaluated safety, immunogenicity and placental transfer of antibodies in 44 HIV-infected women. Pneumococcal IgG antibodies against serotypes 1, 3, 5, 6B, 9V, and 14 were measured in mothers (pre-vaccination and at delivery), and infants (at birth, 1, 2, 3, and 6 months). PPV was safe and immunogenic in mothers. Newborns received 46-72% of maternal antibody titers. Overall, infants had antibody levels lower than protective by 2 months of age. Alternative pneumococcal vaccination of HIV-infected pregnant women should be explored with the aim of prolonging passive protection in their infants.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.vaccine.2009.04.018 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Long-term antibody trajectories after PPSV23 in elderly: Results from a 4-year follow-up study.
Vaccine
January 2025
Beijing Center for Disease Prevention and Control, No. 16, Hepingli Middle Street, Dongcheng District, Beijing 100013, China. Electronic address:
Background: The 23-valent pneumococcal polysaccharide vaccine (PPSV23) is recommended for standalone or sequential use in the elderly in many countries to prevent pneumococcal disease, making it crucial to assess vaccine response and long-term persistence.
Purpose: We aimed to describe the trajectories of circulating antibody levels to the PPSV23 in the elderly following immunization.
Methods: Eligible individuals aged 65 to 70 years were enrolled and vaccinated with one dose of PPSV23.
Prosthetic double valve endocarditis caused by Streptococcus pneumoniae due to overwhelming post-splenectomy infection (OPSI) in a pre-vaccine licensure era: A case report.
J Infect Chemother
January 2025
Department of Cardiovascular Surgery, Kagawa Prefectural Central Hospital, Takamatsu, Japan.
Overwhelming post-splenectomy infection (OPSI) is a severe and potentially life-threatening condition that can occur in patients undergoing splenectomy. We report a case of a patient who had a splenectomy approximately 30 years ago during prosthetic valve insertion for infective endocarditis (IE). The patient later developed prosthetic valve endocarditis caused by Streptococcus pneumoniae associated with OPSI.
View Article and Find Full Text PDFBefore October 2024, the Advisory Committee on Immunization Practices (ACIP) recommended use of a pneumococcal conjugate vaccine (PCV) for all adults aged ≥65 years, as well as for those aged 19-64 years with risk conditions for pneumococcal disease who have not received a PCV or whose vaccination history is unknown. Options included either 20-valent PCV (PCV20; Prevnar20; Wyeth Pharmaceuticals) or 21-valent PCV (PCV21; CAPVAXIVE; Merck Sharp & Dohme) alone or 15-valent PCV (PCV15; VAXNEUVANCE; Merck Sharp & Dohme) in series with 23-valent pneumococcal polysaccharide vaccine (PPSV23; Pneumovax23; Merck Sharp & Dohme). There are additional recommendations for use of PCV20 or PCV21 for adults who started their pneumococcal vaccination series with 13-valent PCV (PCV13; Prevnar13; Wyeth Pharmaceuticals).
View Article and Find Full Text PDFEstablishing a new human pneumococcal standard reference serum, MPRSS-01.
mSphere
January 2025
Merck & Co., Inc., Rahway, New Jersey, USA.
Measuring the immunogenicity of pneumococcal vaccines involves the use of immunoassays to measure serotype-specific immunoglobulin G (IgG) antibody levels post-vaccination with the current human reference serum standard (007sp) for anti-pneumococcal capsule antibodies. Development of new pneumococcal conjugate vaccines (PCVs) with additional serotypes not in 007sp (e.g.
View Article and Find Full Text PDF[Chinese expert consensus on the diagnosis and treatment of pneumonia in the elderly (2024 Edition)].
Zhonghua Jie He He Hu Xi Za Zhi
January 2025
China is experiencing a demographic shift as its population ages. The elderly population becomes increasingly susceptible to pneumonia. Pneumonia in the elderly is characterized by its insidious onset, rapid progression, multiple comorbidities, poor prognosis, and high morbidity and mortality.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!