Browsing by Author "Osman Ali, Samar"

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    Compression between Direct Blood Films, Rapid Diagnostic Test, and Molecular tests for detection of Plasmodium vivax malaria
    (كلية المختبرات الطبية, 2017-03-01) Osman Ali, Samar; Elfadil Elkhairi, Madiha; Mohamed Elfaki, Tarig
    P. vivax malaria has a wide distribution, recently it has been observed in Ethiopia and Sudan, and it is more difficult to control because of the hypnozoite forms of the parasite. Using treatment with primaquine is based on results from laboratory examination. Accurate diagnosis is becoming increasingly important both for individual case management and for P.vivax malaria surveillance. Methods: A total of 422 blood samples were examined by microscopy for P.vivax malaria, with a subset also examined by polymerase chain reaction (PCR) and rapid diagnostic tests (RDTs). The performances of these diagnostic methods were compared. Results: A total of 206 samples were positive, and 216 were negative for P.vivax by microscopy. When compared to the results of RDTs, RDTs had sensitivity and specificity of 86%, 88% respectively. PCR had sensitivity and specificity of 93%, 94% respectively. Conclusions: Microscopy is a reliable method in rural areas where malaria is often seen, but RDT’s offer a good alternative method for remote areas where have no facilities for microscopy. Development of an easy and cheap molecular detection system makes it promising tools for the near future.
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    Duffy Blood Groups among Plasmodium vivax Malaria Patients, Khartoum, Sudan, 2015.
    (كلية المختبرات الطبية, 2017-03-01) Osman Ali, Samar; Abdalgadir Mohammed1, Alsaida; Elzobair, Mohamed; Kamil, Mazin; Mansour, Osman; Abdelkarim Elamin, Elamin
    P. vivax is the second common cause of malaria in the world after P. falciparum, but it has a wider geographical distribution.