ABSTRACT
Khartoum is an urban area with low malaria transmission. Early control efforts were successful in reducing the risk but malaria has resurged in recent years. In 2002, the Government of Sudan, with support of the World Health Organization, embarked on an initiative aimed at freeing Khartoum of malaria. The initiative's prevention strategy has focused on larval control interventions. The results indicate a significant reduction in malaria prevalence, confirmed and clinically diagnosed malaria cases among outpatient attendance and the number of malaria-associated deaths. It is proposed information be collected on parity rates and that a sub-sample of the adult mosquito collections be subjected to ELISA or PCR for identification of malaria parasite infections in mosquitoes in areas showing active foci
Subject(s)
World Health Organization , Prevalence , Enzyme-Linked Immunosorbent Assay , Polymerase Chain Reaction , National Health Programs , Mosquito Control , Urban Population , MalariaABSTRACT
Various pottery materials were evaluated for possible use in manufacturing containers for radioactive waste. Their potential was examined from the viewpoints of the effectiveness of disposal and the changes induced in them by gamma rays. Samples of these materials were irradiated with high-energy neutrons and gamma rays in a reactor near its core. the physical and mechanical properties of the materials before and after gamma irradiation (in a 60Co gamma cell) were compared. The study showed that pottery materials are resistant to radiation. Therefore, they were proposed for manufacturing drums for disposal of radioactive waste of high gamma activity.
ABSTRACT
A cross-sectional community-based study was carried out in Khartoum urban area aimed at stratifying the area by risk of malaria transmission. Two thousand households [8092 individuals] were surveyed during the cold, dry and rainy seasons of 2002. Households with screened windows, using bednets or both were 5.0% [95% CI: 4.1-6.0], 10.9% [95% CI: 9.5-12.3] and 1.8% [95% CI: 1.2-2.5] respectively. Access to health services was high. Only 3.8% [95% CI: 2.9-4.7] of households kept antimalarial drugs at home. The parasite rate, spleen rate and fever rate were very low [0.21%, 0.17% and 0.97% respectively]. Overall, people in Greater Bahry suffer a greater burden of malaria than those in Greater Khartoum or Greater Omdurman, with a seasonal pattern of transmission
Subject(s)
Cross-Sectional Studies , Incidence , Insect Vectors , Population Surveillance , Surveys and Questionnaires , Risk Factors , Self Medication , MalariaABSTRACT
The extraction of cobalt(II) by chloroform solutions of the crown ethers (CE) 12C4, I5C5, 18C6, Dbl8C6, Dchl8C6 or Dch24C8 from aqueous perchlorate medium was investigated. Slope analysis of the experimental data suggested that the extraction of Co(II) by these CEs takes place through ion-pair formation, and that the chemical formula of the main extracted species is Co(OH)(+)ClO(-)(4).CE. The magnitudes of the extraction constants are in the sequence 18C6 > Dch18C6 > Dch24C8 > Db18C6 > 15C5 > 12C4, which is discussed in terms of the correspondence between the CE cavity size and the ionic radius of cobalt(II).
