Publications by authors named "A Marchant"
Background: Significant disparities in Group B Streptococcus (GBS) colonisation and neonatal disease rates have been documented across different geographical regions. For example, Bangladesh reports notably lower rates compared to the United Kingdom (UK) and Malawi. This study investigates whether this epidemiological variability correlates with the immune response to GBS in these regions.
View Article and Find Full Text PDFThis case report is of a 10-year-old female who presented with complaints of blood in her stool and colicky abdominal pain for the last 1.5 years. Biopsy samples from the rectum and left-sided colon were taken during a colonoscopy, revealing numerous histiocytes having calcified bodies (Michaelis-Gutmann bodies).
View Article and Find Full Text PDFBackground: Clinical risk factors of deficient immune responses to COVID-19 mRNA vaccination in SARS-CoV-2 naive hemodialysis recipients (HDR) have already been identified. Clinical factors influencing hybrid immunity induced by SARS-CoV-2 infection and vaccination in HDR have not been reported.
Methods: A comprehensive analysis of antibody (Ab) and T cell responses to two doses of BNT162b2 mRNA vaccination was performed in 103 HDR, including 75 SARS-CoV-2 naive and 28 experienced patients, and in 106 healthy controls (HC) not undergoing HD, including 40 SARS-CoV-2 naive and 66 experienced subjects.
Article Synopsis
- Most people are infected with cytomegalovirus (CMV) by midlife without showing symptoms, but it can lead to serious issues for those with weakened immune systems, especially during pregnancy.
- The study utilized systems serology to analyze the antibody responses in pregnant and nonpregnant women with either primary or chronic CMV infections, revealing distinct antibody profiles depending on the type of infection.
- Findings indicate that the humoral immune response, particularly in IgG antibodies, changes over time and can provide valuable insights for improving CMV diagnostics and understanding risks to pregnant women.
Lung transplant recipients (LTRs) are susceptible to severe Coronavirus Disease 2019 (COVID-19) and had lower immune responses to primary severe acute respiratory syndrome-related to coronavirus 2 (SARS-CoV-2) vaccination as compared to the general population and to other solid organ transplant recipients. As immunity induced by booster vaccination and natural infection has increased since the beginning of the pandemic in the general population, immunity acquired by LTRs is not well documented. Humoral and cellular immunity to SARS-CoV-2 was monitored in February and May 2023 in 30 LTRs and compared to that of health care workers (HCWs) and nursing home residents (NHRs).
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