African Journal of
Microbiology Research

  • Abbreviation: Afr. J. Microbiol. Res.
  • Language: English
  • ISSN: 1996-0808
  • DOI: 10.5897/AJMR
  • Start Year: 2007
  • Published Articles: 5233

Full Length Research Paper

Rhinopharyngeal bacterial flora in 3 to 5 years old children from Yaoundé (Cameroon): Effects of extrinsic factors

Claudine Ntsama Essomba1,3, Georgia Ambada Ndzengué1,2, Thérèse Abong4, andCharles Félix Bilong-Bilong1
1Laboratory of Parasitology and Ecology, University of Yaounde I, PO BOX 812, Yaounde, Cameroon. 2Laboratory of Molecular Biology, Chantal Biya International Reference Centre for HIV/AIDS research on Prevention and Treatment, PO BOX 3077, Yaounde, Cameroon. 3Service of Pharmacy, Yaounde Central Hospital, Cameroon. 4Blue Pharmacy of Ngousso, Yaounde, Cameroon.
Email: [email protected]

  •  Accepted: 25 March 2013
  •  Published: 02 April 2013


We studied the composition, the factors influencing bacterial carriage in children rhinopharynx, and the susceptibility to antibiotics of some isolated strains. Rhinopharyngeal swabs were collected from 150 pupils aged between 3 and 5 years and submitted to qualitative and quantitative analysis using standard methods. The antibiotic sensitivity of potential pathogenic species was evaluated using disc diffusion. Factors influencing bacterial carriage were determined, using many types of statistical tests. Unclassified Streptococcus were present in all the samples and at the highest concentration (2.17 108 Staphylococcus epidermidisMicrococcus spp. andStaphylococcus aureus were found in 25 to 50% samples. Conversely, less than 5% of children carried either Neisseria lactamica, negative or positive Gram-bacilli. S. aureuscarriage was significantly influenced by overcrowding and the frequent use of antibiotic while S. epidermidisMicrococcus spp. and unclassified Streptococcus were affected by the children age and/or the season. S. aureus was sensitive to Oxacillin, Vancomycin, Gentamycin and Cotrimoxazole.


Key words: Rhinopharyngitis, commensal bacteria, children, antibiotics.