Molecular Epidemiological Surveillance of Multidrug-Resistant Pseudomonas aeruginosa Isolates in a Pediatric Population of Patients with Cystic Fibrosis and Determination of Risk Factors for Infection with the Houston-1 Strain

Multiyear molecular epidemiological surveillance of multidrug-resistant Pseudomonas aeruginosa (MRPA) in a pediatric cystic fibrosis care center identified an endemic MRPA strain (Houston-1). Recent hospitalization was found to be a statistically significant risk factor for acquisition of the endemic strain. Multiple infection control improvements led to the reduced incidence of the Houston-1 strain in the CF population.