Eggs are susceptible to microbiological contamination by various pathogens on farms, particularly
those belonging to the genus Staphylococcus, which are zoonotic bacteria capable of contaminating
humans, animals, and/or birds, posing a significant public health concern. In Burkina Faso, limited data
exists on the prevalence of Staphylococcus aureus, prompting this study to investigate the prevalence
and antibiotic resistance of S. aureus on layer farms. To achieve this, a socio-demographic survey was
conducted, followed by egg sampling from different farms. A pool of six eggs constituted one sample
for each farm, and microbiological analysis was performed using standard methods. The antibiotic
susceptibility of the strains was also tested. The results indicated a prevalence of 51.78% from litter,
35.59% from shells, and 10.16% from egg contents. The strains exhibited the highest resistance levels
to Tetracycline (98%), Erythromycin (84%), Trimethoprim/Sulfamethoxazole (77%), Colistin (56%),
Oxacillin (55%), and Cefoxitin (38%). However, the strains showed a high sensitivity to gentamycin
(81%), and 56% were sensitive to Chloramphenicol. These findings highlight the contamination of eggs
by antibiotic-resistant S. aureus, emphasizing the need to enhance good practices in the egg
production chain to prevent such contamination.

eggs prevalences resistance staphylococcus aureus poultry