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Antibiotic Susceptibility of Bacterial Agents Causing Meningitis in Children Older than 1 Month
Reihaneh Mohsenipour1, Behdad Gharib2, Hamid Eshaghi2
1Department of Pediatric Endocrinology, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran.
Abstract:
The frequency and antibiotic susceptibility of bacterial meningitis in children older than one month at Children's Medical Center during 2012-2017 were evaluated in this study. The CSF samples were cultured, and antibiotic sensitivity tests were performed. The samples were cultured on chocolate agar, blood agar (for gram positive) and Mkanky (for gram negative). The antimicrobial susceptibility of the isolates was determined using the disc diffusion method. In total, 72 samples were positive for bacterial infection where Staphylococcus epidermidis (20.8%) was seen most and Enterobacter (1.4%) and Pseudomonas aeruginosa (1.4%) was seen least. Most of these patients were under 1 year of the age and overall frequency of positive cultures of CSF in men (58.3%) was greater than women (41.7%). Bacterial meningitis has relatively diverse etiological factors that include; time of infection, geographical location and age. Most commonly seen bacteria were Staphylococcus aureus with S.epidermidis whereas, Escherichia coli and Pseudomonas aeruginosa was seen least. This result can be substantial in hospitalized patients, because these bacteria are also the result of nosocomial infections.
Insights
This study analyzed bacterial meningitis in children, finding Staphylococcus epidermidis most common. Results highlight the need to understand common pathogens and antibiotic resistance in pediatric meningitis cases.
Area of Science:
- Pediatrics
- Infectious Diseases
- Microbiology
Background:
- Bacterial meningitis remains a significant cause of childhood morbidity and mortality.
- Understanding the etiological agents and their antibiotic susceptibility patterns is crucial for effective treatment and infection control.
Purpose of the Study:
- To determine the frequency and antibiotic susceptibility of bacterial meningitis pathogens in children over one month old.
- To identify common and rare bacterial causes of meningitis and their resistance profiles.
Main Methods:
- Cerebrospinal fluid (CSF) samples were collected from pediatric patients between 2012 and 2017.
- Bacterial cultures were performed using chocolate agar, blood agar, and MacConkey agar.
- Antimicrobial susceptibility testing was conducted using the disc diffusion method.
Main Results:
- Out of 72 positive bacterial infections, Staphylococcus epidermidis was the most frequent isolate (20.8%).
- Enterobacter and Pseudomonas aeruginosa were the least common isolates (1.4% each).
- The majority of affected children were under one year of age, with a higher incidence in males (58.3%) compared to females (41.7%).
Conclusions:
- Staphylococcus epidermidis and Staphylococcus aureus were the most prevalent bacteria causing meningitis in this pediatric cohort.
- Escherichia coli and Pseudomonas aeruginosa were infrequently identified.
- The findings are significant for hospitalized patients, as these bacteria can also cause nosocomial infections.
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