Henry Namme Luma, Marie-Solange Doualla, Cécile Okalla Ebongue, Elvis Temfack, Marguerite Wouafo, Eugene Belley-Priso



Health care acquired infections are a major cause of morbidity and mortality in hospitals. There is very little documentation of this important problem in our resource limited setting. The aim of our study was to identify bacterial reservoirs and microorganisms with the potential of nosocomial infections in our health care environment


Bacteriological samples from the air, surfaces, equipment, personnel and patients from six units of the Douala General Hospital, Cameroon were collected for culture according to standardised collection, culture and germs identification techniques. 


From our study, 73% of all collected samples were contaminated with pathogenic bacteria. These included 83.3% of fomites, 37.5% of air samples and 100% of hands of health care workers. Pathogenic Staphylococci, gram negative bacilli (Escherichia coli, Klebsiella pneumoniae, and Pseudomonas aeruginosa) and Enterococci were found in 64.7%, 54.1% and 48.7% of specimens respectively. The same bacteria found on the hands of nursing personnel were same as on both surfaces and equipment. The intensive care and neonatal units were the most contaminated with 100% positive cultures. The sterilization unit was bacteria free.


Our health care environment is heavily contaminated and the hands of healthcare workers appear to be the main transmission agent of these bacteria.  Guidelines on infection control practices such as hand washing and periodic decontamination must be effectively put in place and continuously evaluated.


Health care environment; Microorganisms; reservoir.


Health care environment; Microorganisms; reservoir

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NHS Education for Scotland, ed. Promoting the Prevention and Control of Infection through Cleanliness Champions. third ed. 2005: NES, Edinburgh.

Walker, A., ed. Hospital acquired infection: what is the cost in Scotland? 2001, University of Glasgow: Glasgow.

Wiseman, S., Prevention and control of healthcare-associated infection. Nursing standard, 2006. 20(38): p. 41-5.

Chalmers, C. and M. Straub, Infection control education for undergraduates. Nursing standard, 2006. 20(37): p. 35-41.

Infection Control Nurses Association, ed. Hand Decontamination Guidelines, ICNA. 2002: London.

Damani, N.N., ed. Manual of infection control procedures, . Second ed. 2003, Greenwich Medical Media: London.

Commission Centrale des Marches - GPEM/SL, Guide de Bio-nettoyage, Recommendations No E-1-90, Direction des Journaux Officiels, Editor Reimpression 1994: Paris.

Nzeako, B.C., et al., Nature of bacteria found on some wards in Sultan Qaboos University Hospital, Oman. British journal of biomedical science, 2006. 63(2): p. 55-8.

Ortiz, G., et al., A study of air microbe levels in different areas of a hospital. Current microbiology, 2009. 59(1): p. 53-8.

Hellgren, U.M. and K. Reijula, Indoor air problems in hospitals: a challenge for occupational health. AAOHN journal : official journal of the American Association of Occupational Health Nurses, 2011. 59(3): p. 111-7.

Vochem, M., M. Vogt, and G. Doring, Sepsis in a newborn due to Pseudomonas aeruginosa from a contaminated tub bath. The New England journal of medicine, 2001. 345(5): p. 378-9.

Lankford, M.G., et al., Assessment of materials commonly utilized in health care: implications for bacterial survival and transmission. American journal of infection control, 2006. 34(5): p. 258-63.

Paul, R., et al., Bacterial contamination of the hands of doctors: a study in the medicine and dermatology wards. Indian J Dermatol Venereol Leprol, 2011. 77(3): p. 307-13.

Weber, D.J., et al., Role of hospital surfaces in the transmission of emerging health care-associated pathogens: norovirus, Clostridium difficile, and Acinetobacter species. American journal of infection control, 2010. 38(5 Suppl 1): p. S25-33.


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