Author(s)

Isaac Samuel Onyankouang^1,2,3, Nicole Prisca Makaya Dangui Nieko^2,3*, Cyr Jonas Morabandza^1,3, Moїse Doria Kaya-Ongoto^1,2, Christoffer Pregna Mounkala^1,2, Etienne Nguimbi¹

¹Faculté des Sciences et Techniques, Université Marien Ngouabi, Brazzaville, Republic of the Congo.
²Laboratoire National de Santé Publique, Brazzaville, Republic of the Congo.
³Laboratoire de Microbiologie, Infectiologie et Immunologie, Ecole Normale Supérieure, Université Marien Ngouabi, Brazzaville, Republic of the Congo.

Introduction: Bacillus cereus and spores produced in various ecological niches are responsible for toxic infections in humans. This study is conducted to determine the antibiotics resistance profile of B. cereus strains isolated from soil and pepper consummated in Brazzaville. Methodology: An antimicrobial susceptibility test of 16 B. cereus strains from soil and peppers was performed using 11 antibiotics by the Kirby-Bauer’s diffusion on disc method. Results: Results revealed 100% (16/16) of resistance in penicillin G, amoxicillin, ceftazidime, rifampicin, and colistin, also 18.75% (3/16), 11.76% (2/16), and 18.75% (3/16) of resistance in doripenem, vancomycin and chloramphenicol respectively. In addition, we have observed 100% (16/16), 81.25% (13/16), 76.47% (13/16), 35.29% (5/16), 35.50% (6/16), and 12.5% (2/16) of sensitivity to line-zolid, tigecycline, ciprofloxacin, vancomycin, doripenem and chloram-phenicol respectively. However, all strains have been multidrug resistant (MDR) to betalactams, polypeptides, and ansamycins. Moreover, 7 strains (43.75%) have been variably multiresistant. One strain, Ri10 has been resistant to beta-lactams, polypeptides, ansamycins, cyclins and glycopeptides. No strain was ultraresistant (XDR) or largely insensitive (PDR) to different antibiotics. Conclusion: This study reveals that 51% of strains have been resistant to antibiotics, 32% are sensitive, and 17% have intermediate resistance. These results partly explain the high rate of gastroenteritis observed in Brazzaville due to food poisoning.

Antibiotics Resistance, Bacillus cereus, Soil, Pepper

Onyankouang, I. , Nieko, N. , Morabandza, C. , Kaya-Ongoto, M. , Mounkala, C. and Nguimbi, E. (2022) Antibiotics Resistance Profile of Bacillus cereus Strains Isolated from Soil and Pepper in Brazzaville. Journal of Biosciences and Medicines, 10, 30-40. doi: 10.4236/jbm.2022.109003.