1. Performance of two methods of carbapenem-resistant Enterobacterales surveillance on a kidney transplant ward: selective culture of and real-time PCR directly from rectal swabs
- Author
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Maristela P, Freire, Doroti, de Oliveira Garcia, Stephanie Garcia, Lima, Cláudia Regina Delafiori, Pea, Jose Otto, Reusing Junior, Fernanda, Spadão, Ana Paula, Cury, Flavia, Rossi, William C, Nahas, Elias, David-Neto, and Ligia C, Pierrotti
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Microbiology (medical) ,Carbapenem-Resistant Enterobacteriaceae ,Infectious Diseases ,Carbapenems ,Enterobacteriaceae Infections ,Humans ,Prospective Studies ,General Medicine ,Real-Time Polymerase Chain Reaction ,Kidney Transplantation ,Hospitals ,Anti-Bacterial Agents - Abstract
Infection with carbapenem-resistant Enterobacterales (CRE) is associated with a high mortality rate in kidney transplant recipients, and colonization with CRE is one of the major risk factors for CRE infection. There is, therefore, a need to improve the capacity to detect colonization with CRE among inpatients.In this prospective study, we compared the performance of real-time PCR for carbapenemase directly from rectal swabs with that of conventional CRE surveillance culture in all patients admitted to a kidney transplant ward between February 2019 and March 2020. Surveillance culture and real-time PCR were performed at admission and weekly until hospital discharge. Two perineum-rectal swabs were collected: one for culture and one for PCR.We collected 905 paired samples for CRE surveillance from 399 patients, of whom 347 (87.0%) were kidney transplant recipients and 52 were waiting list patients. CRE was detected by culture and/or PCR in 75 patients (18.8%). Positivity for CRE was identified by PCR in 62 (15.5%) of the 399 patients and by culture in 55 (13.8%); 20 (5.0%) of the patients tested positive only on PCR, and 13 (3.3%) tested positive only on culture. The most common carbapenemase and species were, respectively, blaIn conclusion, the two methods are complementary and could be useful in a scenario of high CRE prevalence.
- Published
- 2022
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