RT Journal Article T1 Pneumocystis primary infection in non-immunosuppressed infants in Lima, Peru. A1 Ochoa, Theresa J A1 Bustamante, Beatriz A1 Garcia, Coralith A1 Neyra, Edgar A1 Mendoza, Karina A1 Calderón, Enrique J A1 Le Gal, Solene A1 Miller, Robert F A1 Ponce, Carolina A A1 Nevez, Gilles A1 Vargas, Sergio L K1 Infants K1 Peru K1 Pneumocystis jirovecii,Pulmonary colonization K1 Primary infection AB To provide original data on Pneumocystis primary infection in non-immunosuppressed infants from Peru. A cross sectional study was performed. Infants less than seven months old, without any underlying medical conditions attending the "well baby" outpatient clinic at one hospital in Lima, Peru were prospectively enrolled during a 15-month period from November 2016 to February 2018. All had a nasopharyngeal aspirate (NPA) for detection of P. jirovecii DNA using a PCR assay, regardless of respiratory symptoms. P. jirovecii DNA detection was considered to represent pulmonary colonization contemporaneous with Pneumocystis primary infection. Associations between infants' clinical and demographic characteristics and results of P. jirovecii DNA detection were analyzed. P. jirovecii DNA was detected in 45 of 146 infants (30.8%) and detection was not associated with concurrent respiratory symptoms in 40 of 45 infants. Infants with P. jirovecii had a lower mean age when compared to infants not colonized (p Pneumocystis primary infection in this single site in Lima, Peru, was most frequently observed in 2-3-month-old infants, in winter and spring seasons, and with higher detection rates being associated with household conditions favoring close inter-individual contacts and potential transmission of P. jirovecii. YR 2021 FD 2021-09-04 LK http://hdl.handle.net/10668/22401 UL http://hdl.handle.net/10668/22401 LA en DS RISalud RD Apr 9, 2025