Abstract
This study investigated the prevalence of antibiotic resistant bacteria in soils obtained from dumpsites in Abraka, Delta State. Four (4) dumpsites were assayed and composite soil samples were collected from each dumpsite. Isolates were obtained using the standard pour-plate method and pure cultures identified based on their cultural and biochemical characteristics. These were then subjected to antibiotic susceptibility test using the agar-disc diffusion method. A total of 61 isolates were obtained and identified to belong to nine (9) different genera. The isolates were Escherichia sp, Klebsiella spp, Staphylococcus sp, Bacillus spp, Pseudomonas sp, Proteus spp, Micrococcus sp, Streptococcus sp and Neisseria sp. Among the isolates obtained, Escherichia sp had the highest occurrence (26.23%) and Neisseria sp the lowest occurrence frequency of 1.63%. Pefloxacin was the least effective antibiotic as 96% and 76.67% of gram-positive and gram-negative organisms respectively, were resistant to the drug. All the isolates exhibited multidrug tolerance and a multiple antibiotic resistance (MAR) index of 0.8 was recorded for 31.15% of the isolates tested. The implication of these findings is a possible spread of persistent bacterial infections among the resident population. Proper waste management and siting of dumpsites in locations distant from residential areas will help in preventing the public health hazards associated with dumpsites.
Highlights
The indiscriminate disposal of wastes and improper management of waste disposal sites are some of the major environmental challenges in Nigeria
Oviasogie and Agbonlahor (2003), while studying the burden, antibiogram and pathogenicity of bacteria found in municipal waste dumpsites and on waste site workers in Benin City discovered that all isolates obtained showed multiple antibiotic resistance patterns
Escherichia spp. had the highest for serious health concern as spores of Bacillus spp. are prevalence (26.23%) followed by Bacillus spp (24.59%).The transported by air current and dust particles
Summary
Oviasogie and Agbonlahor (2003), while studying the burden, antibiogram and pathogenicity of bacteria found in municipal waste dumpsites and on waste site workers in Benin City discovered that all isolates obtained showed multiple antibiotic resistance patterns. The most susceptible group of individuals to the public health hazards associated with domestic dumpsites are waste-pickers (scavengers) who live and work under unhygienic conditions They are usually seen to visit dumpsites in search of recyclable materials (plastics, bottles, metallic objects, and clothes). This study, focused on the prevalence of bacterial pathogens in waste dumpsites located in Abraka, Nigeria It further provided information on their antibiotic susceptibility as more Multidrug Resistant (MDR) strains keep emerging
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