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- Ljungman, P., et al.
(författare)
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Respiratory virus infections after stem cell transplantation : a prospective study from the Infectious Diseases Working Party of the European Group for Blood and Marrow Transplantation
- 2001
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Ingår i: Bone Marrow Transplantation. - : Springer Science and Business Media LLC. - 0268-3369 .- 1476-5365. ; 28:5, s. 479-484
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Tidskriftsartikel (refereegranskat)abstract
- Community-acquired respiratory virus infections are a cause of mortality after stem cell transplantation (SCT). A prospective study was performed at 37 centers to determine their frequency and importance. Additional cases were also collected to allow the analysis of risk factors for severe infection. Forty episodes were collected in the prospective study and 53 additional episodes through subsequent case collection. The frequency of documented respiratory virus infections was 3.5% among 819 allogeneic and 0.4% among 1154 autologous SCT patients transplanted during the study period. The frequency of lower respiratory tract infections (LRTI) was 2.1% among allogeneic and 0.2% among autologous SCT patients. The mortality within 28 days from diagnosis of a respiratory viral infection was 1.1% among allogeneic SCT while no autologous SCT patient died. The deaths of five patients (0.6%) were directly attributed to a respiratory virus infection (three RSV; two influenza A). On multivariate analysis, lymphocytopenia increased the risk for LRTI (P = 0.008). Lymphocytopenia was also a significant risk factor for LRTI in patients with RSV infections. The overall mortality in RSV infection was 30.4% and the direct RSV-associated mortality was 17.4%. For influenza A virus infection, the corresponding percentages were 23.0% and 15.3%. This prospective study supports the fact that community-acquired respiratory virus infections cause transplant-related mortality after SCT.
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- Engelhard, D, et al.
(författare)
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Early and late invasive pneumococcal infection following stem cell transplantation: a European Bone Marrow Transplantation survey
- 2002
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Ingår i: British Journal of Haematology. - : Wiley. - 0007-1048. ; 117:2, s. 444-450
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Tidskriftsartikel (refereegranskat)abstract
- Streptococcus pneumoniae (S. pneumoniae) may cause severe and lethal infections months and years following stem cell transplantation (SCT). In a prospective survey over a 3.5-year period, we assessed the incidence, risk factors and outcome for invasive pneumococcal infection (IPI) following SCT. Fifty-one episodes of IPI were reported: 43 episodes after bone marrow transplantation (BMT) and 8 after peripheral blood stem cell transplantation (PBSCT); 35 after allogeneic SCT and 16 after autologous SCT. Seven IPI episodes, all bacteraemias, were defined as early, occurring 1-35 d (median 3 d) post transplantation. Forty-four episodes were defined as late (greater than or equal to 100 d post SCT), occurring 4 months to 10 years (median 17 months) post transplantation. The incidences of early and late IPI were 2.03/1000 and 8.63/1000 transplantations respectively (P = 0.001). A higher incidence of late IPI was observed after BMT than after PBSCT (10.99 versus 3.23/1000; P < 0.01) and after allogeneic versus autologous SCT (12.20 versus 4.60/1000; P < 0.01). There was a higher estimated incidence of IPI in allogeneic patients with than in those without graft-versus-host disease (GVHD) (18.85 versus 8.25/1000; P = 0.015). The mortality rate was 20%, including 2/7 of early and 8/44 of late IPI. S. pneumoniae is a rare but important complication during the aplastic phase after SCT. In conclusion, S. pneumoniae is a significant cause of morbidity late post-transplantation, especially in allogeneic patients, and particularly those with GVHD. The high IPI mortality rate, both early and late post-transplantation, requires preventive approaches, mainly effective immunization.
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- Halfvarson, Jonas, 1970-, et al.
(författare)
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Knowing when but not how! : mothers' perceptions and use of antibiotics in a rural area of Viet Nam
- 2000
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Ingår i: Tropical doctor. - : SAGE Publications. - 0049-4755 .- 1758-1133. ; 30:1, s. 6-10
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Tidskriftsartikel (refereegranskat)abstract
- Given the world-wide focus on how to rationally use antibiotics, national drug policy programmes have been developed in many countries in order to minimize the environmental antibiotic pressure and thereby hopefully limit increasing bacterial resistance. This study investigated perceptions of antibiotics in a health system with weak drug regulation. The study was conducted in two rural communes in Viet Nam, with a drug market characterized by the increased accessibility and consumption of pharmaceuticals. The study focused on rural mothers' perceptions and use of antibiotics in the treatment of acute respiratory infections (ARI) in children 5 years and under. A combination of qualitative and quantitative methods were used including key informant interviews, focus group discussions, and interviews with mothers and drug vendors. The study demonstrated that using a combination of qualitative and quantitative methods gives a better understanding of the prevailing perceptions and use of antibiotics in communities. The results showed that the mothers recognized well the signs of severe ARI and that antibiotics were reserved for more severe illness episodes, where penicillin V and ampicillin were first drugs of choice. However, the mothers' perceptions and use of antibiotics reflects indigenization of antibiotics into traditional Vietnamese thinking and medical practice. This resulted in self-medication and a respect for antibiotics from the mothers' point of view. A first step towards the rational use of antibiotics is already taken where mothers, as the health decision-maker, know when to initiate antibiotic treatment and try to limit unnecessary use of antibiotics. The next step is to develop a well-functioning health education programme in order to promote the correct use of antibiotics for a successful clinical outcome. This requires acknowledgement of the mothers' culture based behaviour.
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- Hammarström, Viera, et al.
(författare)
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Serum immunoglobulin levels in relation to levels of specific antibodies in allogeneic and autologous bone marrow transplant recipients
- 2000
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Ingår i: Transplantation. - : Ovid Technologies (Wolters Kluwer Health). - 0041-1337 .- 1534-6080. ; 69:8, s. 1582-1586
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: The aim of this study was to investigate the correlation of total levels of immunoglobulins to levels of specific antibodies after allogeneic and autologous bone marrow transplantation. Autologous transplant patients had normal levels of IgA and IgG antibodies already at 6 months after transplantation. In allogeneic transplanted patients without chronic graft versus host disease the immunological recovery was slower. The IgA and IgG levels were at the limit for deficiency at 6 months after transplantation. In allogeneic transplant patients with chronic chronic graft versus host disease the immunological recovery was delayed further. The total IgG levels were low at 12 months after transplantation and the IgG subclass pattern did not normalize until 24 months after transplantation. IgA levels remained low at 24 months after transplantation in all allogeneic transplanted patients with chronic chronic graft versus host disease. Protective levels of specific antibodies against tetanus and pneumococci decreased during the first year after transplantation regardless of the total immunoglobulin levels, regardless of the donors immunity. Pneumococcal antibodies decreased only in allogeneic transplanted patients, although autologous transplant patients retained pretransplant immunity against pneumococci. There was no difference in levels of specific antibodies between patients with and without chronic chronic graft versus host disease at 12 months after transplantation. There was no correlation between total immunoglobulin levels to levels of specific antibodies against tetanus and pneumococci after transplantation in our study. Taken together, normalized immunoglobulin levels do not predict normalization of levels of specific antibodies against tetanus and pneumococci after transplantation.
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- Hassan, Z, et al.
(författare)
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Pharmacokinetics of liposomal busulphan in man
- 2001
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Ingår i: Bone marrow transplantation. - : Springer Science and Business Media LLC. - 0268-3369 .- 1476-5365. ; 27:5, s. 479-485
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Tidskriftsartikel (refereegranskat)
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