PhD Degree Awarded to Mr. Mohammed Najeeb Al-Banna in Microbiology

Mr. Mohammed Najeeb Qaed Abdullah Al-Banna‎ was awarded a PhD degree in Microbiology with distinction for his dissertation titled: Molecular Characterization of Campylobacter Jejuni Isolated from Local and Imported Chicken Samples in Sana’a City, Yemen‎, which was submitted to the Department of Biological Sciences, Faculty of Science–Sana’a University. The dissertation defense was held on Tuesday, May 12, 2026‎.
The PhD Viva-Voce Committee, which was formed based on a resolution issued by the Graduate Studies and Scientific Research Council, consisted of the following:

# Committee Members Designation Position
1 Prof. Hala Al-Jabouri Internal Examiner Chair
2 Prof. Saeed Mansar Al-Ghalibi Main Supervisor Member
3 Assoc. Prof. Adel Al-Eryani External Examiner Member

The dissertation aimed to:
 Isolate, identify, and characterize Campylobacter jejuni bacteria from local and imported chicken samples in Sana’a City using molecular techniques
The study yielded several key findings summarized as follows:
 The prevalence rate of Campylobacter jejuni in the food chain in Sana’a City was moderate.
 The researcher successfully discovered four new bacterial strains and documented them in the international gene bank under the designation Al-Bana M N H1-H4..
In light of these findings, the researcher recommended the following:
 Expanding studies across Yemen to provide comprehensive data on bacterial prevalence, antibiotic resistance, and associated risk factors.
 Focusing on molecular techniques in future studies and investigating the relationship between human infection and areas where birds, particularly poultry, are present.
The dissertation defense was attended by a number of academics, researchers, and specialists, students, colleagues, and the researcher’s family.