Open AccessAerobacteriology of laboratories and offices: Evidence of high risk exposure to immune complex formation in Nigeria
Author(s) -
Michael Chukwudi Ezeani,
MI Agba,
Charles Chinedum Onyenekwe,
I Anahalu,
CC Azikiwe,
BE Unaezeb,
UU Ezeani
Publication year - 2011
Publication title -
asian pacific journal of tropical disease
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.208
H-Index - 33
ISSN - 2222-1808
DOI - 10.1016/s2222-1808(11)60053-4
Subject(s) - corynebacterium diphtheriae , bacteria , micrococcus , colony forming unit , microbiology and biotechnology , biology , veterinary medicine , toxicology , diphtheria , medicine , immunology , vaccination , genetics
Objective: To evaluate the air bacterial load especially in high environmentally polluted areas.\udMethod: The air bacterial load of 5 laboratories and 2 offices in Anambra State were sampled,\udusing settled plate (sedimentation) method. Results: All the laboratories showed average of 44-55\udcolony forming units (CFU) within 15 minutes. Both aerobic and anaerobic bacteria were isolated.\udThe predominant bacteria were: Micrococcus, Diptheroids, Staphylococcus species, Bacillus\udspecies, Corynebacterium diphtheriae (C. diphtheriae), Clostridium species and Propionibacterium\udamongst other variety of bacteria isolated. Office with air-conditioning system gave a total of 34\udCFU out of 74 CFU shown in the two 2 offices, while the office without air-conditioning system\udgave forty (40) colonies. Conclusion: It was found that the laboratories with more number of\udpeople, with frequent movement were more air loaded with bacteria than those with less number\udof people. All the areas sampled, contain significantly high number of colony forming units (CFU)\udthan 3 CFU found in standard clean room P<0.001. It is an evidence of high risk of persistent\udinfections and subsequent immune complex formation