Connaissances et attitudes du personnel médical en matière de transfusion sanguine au Mali

Purpose of the studyWe undertook a study to determine the level of knowledge and practice of medical staff personnel on transfusion medicine in Mali at Bamako and Kati.Patients and methodsThe study was conducted from January to April 2010 in the three main teaching hospitals of Bamako and Kati and in the six referral health centers of the district of Bamako. Medical staff knowledge and practice were assessed using a questionnaire. The study population consisted of specialized practitioners (15%), general practitioners (21.4%), nurses (41.6%), and midwives (22%).ResultsOverall, 70.9% of the staff did not receive any training in blood transfusion since their graduation. The general knowledge about blood transfusion was insufficient in 53.9% of staff and excellent in 46.1%. Only 42.9% of medical staff has a good basic knowledge of blood products, their indications, and related accidents.ConclusionOur study showed weaknesses in the transfusion system in Bamako, with insufficient knowledge of the medical staff in blood transfusion and little experience.     

Risque résiduel de transmission du VIH et du VHB par transfusion sanguine entre 2003 et 2005 au Centre national de transfusion sanguine de Dakar (Sénégal)

Background and aimUsing of safety blood products did not stop improving these last years. The use of effective methods as well immunologicals as virologicals ones really reduces risk associated to blood transfusion. However, it persists residual risk (RR) of transfusion transmitted viral diseases. The aim of our study was to detect cases of seroconversion for HIV,and HBV among donors in the Senegalese national blood bank. And then, we estimated the RR of these virus.MethodsWe led a transverse retrospective study from 2003 (January 1st) to 2005 (December 31st). Had been included donors with at least two donations of blood during the period of study. They had to be seronegative for HIV and HBV after the first donation. All donors with only one donation had been excluded. RR was estimated by multiplying incidence rates by the durations of the window periods.ResultsDuring 3 years, we collected 425,503 donations; 388 were positive for HIV and 4240 for HBV. But we noted only two cases of seroconversion for HIV and 23 for HBV. So, RR estimated was 3,5 in 100,000 donation for HIV and 102,45 in 100,000 donations for VHB.ConclusionIt emerges from this study that the risk of blood transmitted virus is always high. Introduction of more sensitive tests (as nucleic acid testing) would allow us to deliver more safety products.     

Le paludisme d’importation au CHU de Bordeaux de 2000 à 2007: épidémiologie, prise en charge et comparaison avec les données nationales

In Western countries, France accounts for the most concerned by imported malaria. The objective of the present study was to describe the epidemiological and clinical features of imported malaria in adults attending the University Hospital Center (UHC) ofBordeaux and to compare these findings with the French national epidemiological data. A retrospective analysis of all patients aged over 15 years with parasitologically confirmed malaria in patients recruited between January 1, 2000 and December 31, 2007 has been performed. A total of 526 cases fitted the inclusion criteria with two-thirds of males and a mean age of 37 years. Patients were less frequently native from sub-Saharan Africa (SA), Madagascar, and Comoros than those from the French national data register (29 versus 72%). Hence, SA was the main destination (2/3 travelling to Western Africa and 1/3 to Central Africa). The recourse to an adequate chemoprophylaxis (CPL) for stays in areas of chemoresistance had been reported in about one-third of the patients. From these, two thirds were noncompliant. The recourse to chloroquine less frequent (6 versus 24%) among patients from Bordeaux compared to those from the national data register whereas the recourse to mosquito net use more frequent in patients from Bordeaux (36 versus 3%). Plasmodium falciparum was the main infective species.Malaria was more frequently associated with hospitalization (89 versus 71%) and with severe disease (9 versus 4%) in Bordeaux than in national data register. Two deaths were declared. Atovaquone-proguanil (AP) combination therapy wasmore frequently used in Bordeaux compared to the national data (64 versus 20%). This AP combination treatment was the most frequently prescribed for uncomplicated malaria, whereas intravenous quinine was mainly used for complicated malaria and for patients with vomiting. The lack of CPL, the diagnosis or therapeutic delay, and the lethality of malaria among travellers infected by malaria imported from SA argue for the implementation of continuing medical training and health education targeted at travellers from France to high malaria-endemic areas such as SA, Madagascar, and Comoros.     

Profil des cytokines associées à la protection contre les accès palustres au cours de la grossesse en zone hypo-endémique au Sénégal

Background: Malarial infection in non immune pregnant women is a major risk factor for pregnancy failure. However in malaria endemic areas, intermittent preventive treatment (IPTp) have been adopted to prevent malaria in pregnancy women since 2003 in Senegal. The impact of IPT on the development of immunity is not very well documented. We conducted a prospective study at the RoiBaudouin maternity hospital of Guediawaye in Senegal to assess IL10, IL12, TNFα and IFNγ cytokines production in pregnant women under IPTp. Cytokines were analyzed in 82 sera at inclusion and delivery. P. falciparum HRP2 antigen was detected in 17% of women included by rapid diagnostic test (RDT). At inclusion the mean of IL10 response was higher in P. falciparum negative women (8 UA) compare to RDT-positive women (7 UA) p=0.069 while in delivery the opposite was found p=0.014. Low production of inflammatory cytokines IL12, IFNγ and TNFα was noted in both groups. Between inclusion and delivery, a significant increase of IL-10 production was noted while a decrease of IFNγ and TNFα cytokine was noted. Thus, IL12 and IFNγ responses may synergistically associate as malaria immune response during pregnancy.     

Stratégies d’exploration de l’allo-immunisation plaquettaire pour la prévention et la prise en charge des inefficacités transfusionnelles plaquettaires

Platelet refractoriness is a serious complication for patients receiving recurrent platelet transfusions, which can be explained by non-immune and immune causes. Human Leukocyte Antigens (HLA) allo-immunization, especially against HLA class I, is the major cause for immune platelet refractoriness. To a lesser extent, allo-antibodies against specific Human Platelet Antigen (HPA) are also involved. Pregnancy, transplantation and previous transfusions can lead to allo-immune reaction against platelet antigens. After transfusion, platelet count is decreased by accelerated platelet destruction related to antibodies fixation on incompatible platelet antigens. New laboratory tests for allo-antibodies identification were developed to improve sensibility and specificity, especially with the LUMINEX^® technology. The good use and interpretation of these antibodies assays can improve strategies for platelet refractoriness prevention and management with a patient adapted response. Compatible platelets units can be selected according to their identity with recipient typing or immune compatibility regarding HLA or HPA antibodies or HLA epitope compatibility. Prospective studies are needed to further confirm the clinical benefit of new allo-antibodies identification methods and consensus strategies for immune platelet refractoriness management.     

Contributions du comité directeur de transfusion sanguine du Conseil de l’Europe à la détermination des règles de sélection des donneurs de sang et de composants sanguins et à l’étude des conduites sexuelles ayant un impact sur la sécurité transfusionnelle

In November 2009, the Council of Europe's Blood Transfusion Steering Committee created a group of experts to explore the problem of behaviors having an impact on the management of donors of blood and blood components and on blood transfusion safety in Europe. This ad hoc group sought a harmonised interpretation of temporary exclusion (or temporary deferral), as opposed to permanent exclusion (or permanent deferral), in the context of the selection of donors of blood and blood components. It was also given the mandate to assess, on the basis of available data, the possibility of differentiating “at risk” behaviours from behaviours “at high risk” of contamination by serious infectious diseases transmitted by blood, blood components or derived therapeutic products. The primary objective of this work was to ensure the safety of blood, blood components and derived therapeutic products for future recipients by promoting a risk analysis-based approach, given that some countries envisaged amending their provisions for donor selection. However, a risk analysis can only be performed on groups, not individuals, which may give the impression of a discriminatory approach, so it needed to be justified in the context of transfusion safety. A collaborative project, which included an investigation phase, led to the drafting of a technical memorandum that summarised the data collected in ten Council of Europe member states on the selection criteria for blood donors and the epidemiology of infectious diseases (with a focus on human immunodeficiency virus) in the general population and among blood donors. The technical memorandum was published in 2011 on the European Directorate for the Quality of Medicines and Healthcare website dedicated to this project. A draft resolution of the Committee of Ministers of the Council of Europe was then developed by the Council of Europe's Blood Transfusion Steering Committee. This text was circulated among member and observer states of the Council of Europe for review and comments.     

Impact socio-économique d’une décennie de prise en charge thérapeutique pour les personnes vivant avec le VIH traitées par ARV au Sénégal

A retrospective biographical survey was conducted based on a patient sample whose median ARV treatment duration was nine years (within the framework of ANRS Cohort 1215 in Dakar) in order to document the long-term socio-economic outcomes for PLHIV. The study shows that, overall, socio-economic indicators did not significantly deteriorate since treatment initiation. The patients’ socioeconomic profile—defined by their type of employment and wages, by gender—is identical to that of the general population. Medical care through ARV therapy has helped limit the disease’s negative social impact. However, the economic insecurity experienced by these patients, comparable to that of the general population, is a threat to their medical care over the long term.     

Améliorer la prise en charge du paludisme par les tests de diagnostic rapide (TDR) : appropriation par les prestataires et bénéficiaires de soins au Sénégal

Introduced in the public health services in Senegal since 2007, Rapid Diagnostic Tests (RDTs) are a new technical opportunity for clinical diagnosis of malaria. We analyze how different categories of caregivers, who are the providers, assume appropriation of their professional practices. Similarly, we document, from the analysis of their application for care, attitudes of recipients towards RDTs. The results show a time lag between the uses of this tool and the recommendations. RDTs have a recognized epidemiological usefulness. However, their positive integration requires a change in behaviors that caregivers and recipients are not always willing to assume. Indeed, the architecture, working conditions and applications for care influence the modes of appropriation of this technical innovation.     

Association entre les virus du syndrome d’immunodéficience acquise et le virus de l’hépatite C chez les jeunes donneurs de sang à Kinshasa : analyse rétrospective de 10 années

Study objectives

The screening of anti-Human Immunodeficiency Virus antibodies is mandatory in every blood donor admitted to the Blood Bank of Kinshasa University Clinics since 1984. However, no compiled data are available to date. The objective of this study was to establish the trend, prevalence, viral co-infections, and determinants of Human Immunodeficiency anti-Virus serology in blood donors admitted between 2003–2006 and 2008–2013.

Évaluation du coût direct de la prise en charge médicale du VIH entre la troisième et la dixième année de traitement ARV à Dakar

The direct cost of medical care for HIV infection—excluding ARVs, viral load and CD4 counts—was assessed for patients who received ARV treatment in Senegal within the framework of the ANRS cohort 1215, between the third and tenth year of follow-up. The average annual direct cost was estimated at 120 €/patient/year; this amount remained stable over the first ten years of treatment follow-up. Biological assessments for routine follow-up account for the majority of these costs (66%), followed by drugs (26%). Given the level of economic poverty facing by families, patients cannot bear such expenses over several years. However, these costs appear low enough to be covered by HIV-treatment programs or included in Universal Health Coverage systems.     

Caractéristiques des syndromes grippaux pris en charge aux urgences du centre hospitalier régional de Saint-Pierre, île de la Réunion, au cours de l’épidémie à virus pandémique A(H1N1) 2009 (juillet–septembre 2009)

A new H1N1 virus originating from swine recently emerged as the first influenza pandemic of the 21st century. On July 3, 2009, this new influenza A(H1N1) virus (S-OIV) of swine origins was identified in Réunion Island, a French overseas department located in the southern hemisphere. The present study describes the characteristics of the epidemic from July 3 to September 30, 2009. Among the 479 patients included in our study (236 males, 37.3 ± 19.0 years), 255 (53.2%) were reported to have comorbidities or risk factors (RF) for complications. Complications occurred in 160 patients (33.4%). The most common complications were bronchial hyperreactivity (52.7%), pneumonia (32.1%), and decompensation caused by comorbidity (17.9%). 111 patients (23.2%) required hospitalization. Patients aged 65 and over, accounted for 11.9% of all patients, 32.4% of hospitalized patients and 22.5% of complicated S-OIV infections. Regardless of age, comorbidity and/or RF were reported in 80.0% of complicated S-OIV infections and 91.0% of hospitalized patients. Recommendations for surveillance, prevention and policy for persons with RF, particularly respiratory disease, are justified. However, the absence of risk factors did not prevent the occurrence of complications, present in 14.3% of the cases.