Bacteria causing ventriculoperitoneal shunt infections in a Kenyan population

Area of Science:

• Neurosurgery
• Infectious Diseases
• Pediatrics

Background:

• Ventriculoperitoneal shunt (VPS) infections are a significant cause of complications in hydrocephalus patients.
• Existing data on VPS pathogens predominantly originate from Western countries, with limited information from Africa.
• Understanding local microbial patterns is vital for effective prevention and treatment strategies in African settings.

Purpose of the Study:

• To identify the specific microorganisms responsible for VPS infections in a rural Kenyan hospital.
• To inform targeted antimicrobial therapy and infection control measures in the region.

Main Methods:

• A retrospective analysis of VPS infections was conducted.
• Data were collected from the neurosurgical database at BethanyKids at Kijabe Hospital.
• The study period spanned from September 2010 to July 2012.

Main Results:

• Gram-negative bacteria accounted for 40% of VPS infections, a higher proportion than reported in Western literature.
• Staphylococcus species caused 51% of infections (Staphylococcus aureus 25%, other Staphylococcus 26%).
• Most gram-negative infections were multidrug-resistant, but sensitive to meropenem; gram-negative infections were linked to poorer outcomes.

Conclusions:

• The prevalence of gram-negative bacteria in VPS infections in Kenya differs significantly from Western patterns, where Staphylococcus epidermidis dominates.
• Prompt empirical treatment for VPS infections in Kenya should include coverage for both gram-positive and gram-negative bacteria.
• Further research across Sub-Saharan Africa is needed to ascertain the geographic extent of increased gram-negative bacterial frequency in VPS infections.