Étude de la part du paludisme chez les consultants fébriles et des indices plasmodiques chez des écoliers dans la région du Trarza, République islamique de Mauritanie

Abstract

A study was performed to appreciate the importance of malaria in the low valley of the Senegal River North Bank in Mauritania. The malaria incidence was assessed among patients visiting the regional hospital of Rosso (Trarza region) for a "presumptive malaria", a diagnosis assigned by the clinicians based on fever and other suggestive symptoms of malaria. The malaria prevalence rate was also measured in schoolchildren. A total of 1431 febrile outpatients were sampled for thick and thin blood films, between December 2004 and March 2005, August and November 2005, and April and July 2006. The average malaria prevalence rate was 2.5% (36/1431). It varied from 0.7% (4/576) for the period from December 2004 to March 2005 to 3.8% (18/475) from August to November 2005 and 2.1% (8/380) from April to July 2006. Of the 1040 school children of 6 to 14 years of age, the average malaria parasite prevalence rate was 0.9% (9/1040). It was 0.4% (1/224), 1.7% (7/413) and 0.2% (1/402), Respectively, in February 2004 (cold and dry season), October 2005 (rainy season) and June 2006 (hot and dry season). These very low levels of malaria endemicity and incidence are comparable with those recorded in the same area on the (South) bank of the river in Senegal. In this context of unstable malaria, characterized by the absence or a low level of natural immunity of the population, an effective monitoring is essential for an early detection and a damming up of the malaria epidemic blazes that likely occur.

Diagnosing acute and prevalent HIV-1 infection in young African adults seeking care for fever: a systematic review and audit of current practice

“…15,16 The screening prevalence for malaria in the 37 studies that tested for this aetiology ranged from 0% in Angola in 2009 to 79.1% in Tanzania in 2013. 17,18 Of note, in those studies where both health workers and expert researchers performed diagnostic tests, or test results were PCR confirmed, positivity rates for blood slides judged by health workers were consistently higher than those judged by research experts or PCR rates (data not shown).…”

Malaria in three epidemiological strata in Mauritania

“…Malaria prevalence was also shown to be low in Rosso (16°30’N, 15°48’W), a city situated along the Senegal River, and its surrounding villages, in 2004–2006 [ 19 ]. In that study, 36 of 1431 (2.5 %) febrile paediatric and adult patients had positive smears, mostly due to P. falciparum , and 9 of 1040 (0.9 %) asymptomatic schoolchildren were malaria parasite carriers.…”

Mobile phones and head tumours. The discrepancies in cause-effect relationships in the epidemiological studies - how do they arise?

“…Also the European Environment Agency [87], the European Parliament [88], and two recent papers [89,90] have expressed preoccupations about the effects on human health, particularly on that of young people, by the continuous RF exposure produced in public places and at home by wi-fi for internet access and MP use. The European Parliament has also pointed at "the need to evaluate scientific integrity of the authors, in order to forestall possible risks, conflicts of interest or even frauds which tend to arise in a context of growing competition among researchers" [88].…”