B Panasiuk1, D Prokopowicz, A Panasiuk. 1. Dept of Infectious Diseases, Medical Academy of Bialystok, Zurawia Str 14, PL-15-540 Bialystok, Poland. apanasiuk@wp.pl
Abstract
BACKGROUND: Vaccination against infectious diseases is a recommended preventive measure in patients with impaired immunity. The aim of the study was to estimate the immunogenicity of the vaccine against tick-borne encephalitis (TBE) in HIV-infected patients and to determine its safety for this group. PATIENTS AND METHODS: The TBE vaccine FSME-IMMUN-inject was tested on 29 HIV-positive patients and the response compared to that of 40 healthy controls. The vaccination protocol for the HIV-positive group was modified by the addition of a fourth dose according to a 0/1/2/9-month schedule. RESULTS: No serious adverse reactions were observed in patients with deficient immunity. A better response was obtained in HIV-infected patients with CD4 counts >or= 500/microl (55% of the patients had levels of IgG antibody > 126 VIEU/microl) than in those with CD4 counts of 200-499/microl (40%). However, the difference did not reach significance. 85% of healthy controls achieved protective antibody titers after a full course of vaccination. CONCLUSION: The correlation between post-vaccine seroconversion and CD4 lymphocyte count showed that the FSME-IMMUN-inject vaccine can be considered to be a CD4 cell-independent vaccine. The examinations carried out 1 year after the completed vaccination protocol showed maintenance of the anti-TBE response acquired after the third vaccination in healthy subjects and in HIV-infected patients.
BACKGROUND: Vaccination against infectious diseases is a recommended preventive measure in patients with impaired immunity. The aim of the study was to estimate the immunogenicity of the vaccine against tick-borne encephalitis (TBE) in HIV-infectedpatients and to determine its safety for this group. PATIENTS AND METHODS: The TBE vaccine FSME-IMMUN-inject was tested on 29 HIV-positive patients and the response compared to that of 40 healthy controls. The vaccination protocol for the HIV-positive group was modified by the addition of a fourth dose according to a 0/1/2/9-month schedule. RESULTS: No serious adverse reactions were observed in patients with deficient immunity. A better response was obtained in HIV-infectedpatients with CD4 counts >or= 500/microl (55% of the patients had levels of IgG antibody > 126 VIEU/microl) than in those with CD4 counts of 200-499/microl (40%). However, the difference did not reach significance. 85% of healthy controls achieved protective antibody titers after a full course of vaccination. CONCLUSION: The correlation between post-vaccine seroconversion and CD4 lymphocyte count showed that the FSME-IMMUN-inject vaccine can be considered to be a CD4 cell-independent vaccine. The examinations carried out 1 year after the completed vaccination protocol showed maintenance of the anti-TBE response acquired after the third vaccination in healthy subjects and in HIV-infectedpatients.
Authors: Nicole Harrison; Katharina Grabmeier-Pfistershammer; Alexandra Graf; Ilse Schwarzinger; Judith H Aberle; Karin Stiasny; Hildegard Greinix; Werner Rabitsch; Peter Kalhs; Michael Ramharter; Heinz Burgmann; Christina Forstner Journal: NPJ Vaccines Date: 2020-07-24 Impact factor: 7.344
Authors: Kyra D Zens; Sarah R Haile; Axel J Schmidt; Ekkehardt S Altpeter; Jan S Fehr; Phung Lang Journal: BMJ Open Date: 2022-04-22 Impact factor: 3.006