TY - JOUR
T1 - Research article network analysis of polymicrobial chronic wound infections in Masanga, Sierra Leone
AU - Sandmann, Sarah
AU - Nunes, Jonathan Vas
AU - Grobusch, Martin P.
AU - Sesay, Maxwell
AU - Kriegel, Martin A.
AU - Varghese, Julian
AU - Schaumburg, Frieder
N1 - Funding Information: We thank all laboratory technicians and medical staff at Masanga Hospital, Sierra Leone and the Institute of Medical Microbiology, University of Münster, Germany for their assistance and continuous support. Publisher Copyright: © 2023, The Author(s).
PY - 2023/12/1
Y1 - 2023/12/1
N2 - Background: Chronic wounds are frequently colonized or infected with multiple bacterial or fungal species, which can both promote or inhibit each other. Network analyses are helpful to understand the interplay of these species in polymicrobial infections. Our aim was to analyse the network of bacterial and fungal species in chronic wounds. Methods: Swabs (n = 163) from chronic wound infections (Masanga, Sierra Leone, 2019–2020) were screened for bacterial and fungal species using non-selective agars. Some of these wounds were suspected but not confirmed Buruli ulcer. Species identification was done with MALDI-TOF mass spectrometry. Network analysis was performed to investigate co-occurrence of different species within one patient. All species with n ≥ 10 isolates were taken into account. Results: Of the 163 patients, 156 had a positive wound culture (median of three different species per patient; range 1–7). Pseudomonas aeruginosa (n = 75) was the dominating species with frequent co-detections of Klebsiella pneumoniae (21 cases; OR = 1.36, 95%CI: 0.63–2.96, p = 0.47), Staphylococcus aureus (14 cases; OR = 1.06, 95%CI: 0.44–2.55, p = 1) and Proteus mirabilis (13 cases; OR = 0.84, 95%CI: 0.35–1.99, p = 0.69). Conclusion: The culturome of chronic wounds in Sierra Leonean patients is highly diverse and characterized by the co-occurrence of P. aeruginosa, K. pneumoniae and S. aureus.
AB - Background: Chronic wounds are frequently colonized or infected with multiple bacterial or fungal species, which can both promote or inhibit each other. Network analyses are helpful to understand the interplay of these species in polymicrobial infections. Our aim was to analyse the network of bacterial and fungal species in chronic wounds. Methods: Swabs (n = 163) from chronic wound infections (Masanga, Sierra Leone, 2019–2020) were screened for bacterial and fungal species using non-selective agars. Some of these wounds were suspected but not confirmed Buruli ulcer. Species identification was done with MALDI-TOF mass spectrometry. Network analysis was performed to investigate co-occurrence of different species within one patient. All species with n ≥ 10 isolates were taken into account. Results: Of the 163 patients, 156 had a positive wound culture (median of three different species per patient; range 1–7). Pseudomonas aeruginosa (n = 75) was the dominating species with frequent co-detections of Klebsiella pneumoniae (21 cases; OR = 1.36, 95%CI: 0.63–2.96, p = 0.47), Staphylococcus aureus (14 cases; OR = 1.06, 95%CI: 0.44–2.55, p = 1) and Proteus mirabilis (13 cases; OR = 0.84, 95%CI: 0.35–1.99, p = 0.69). Conclusion: The culturome of chronic wounds in Sierra Leonean patients is highly diverse and characterized by the co-occurrence of P. aeruginosa, K. pneumoniae and S. aureus.
KW - Africa
KW - Community networks
KW - Microbiome
KW - Panton-Valentine leukocidin
KW - Staphylococcus aureus, Pseudomonas aeruginosa
KW - Wound infection
UR - http://www.scopus.com/inward/record.url?scp=85152863709&partnerID=8YFLogxK
U2 - https://doi.org/10.1186/s12879-023-08204-0
DO - https://doi.org/10.1186/s12879-023-08204-0
M3 - Article
C2 - 37072717
SN - 1471-2334
VL - 23
JO - BMC Infectious Diseases
JF - BMC Infectious Diseases
IS - 1
M1 - 250
ER -