najem aldin mohammed osman department of biotechnology, faculty of science and technology, omdurman islamic university, sudan intisar elhag elrayah college of applied medical science, shaqra university, ksa hisham altayb department of microbiology, college of medical laboratory sciences, sudan university for science and technology nihad mohammed elhaj department of microbiology, tropical medicine research institute, national center for research, sudan mohamed ahmed salih department of biotechnology, biotechnology park, africa city of technology, sudan nadir abuzeid faculty of medical laboratory sciences, omdurman islamic university muataz mohmed eldirdery