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Respiratory syncytial virus acute respiratory infection‐associated hospitalizations in preterm Mexican infants: A cohort study

2020; Wiley; Volume: 14; Issue: 2 Linguagem: Inglês

10.1111/irv.12708

1750-2659

Daniela Benítez‐Guerra, Cecilia Piña‐Flores, Miguel Ángel Zamora-López, Francisco J. Escalante-Padrón, Victoria Lima‐Rogel, Ana María González‐Ortiz, Marcela Guevara‐Tovar, Sofía Bernal‐Silva, Beatriz Benito‐Cruz, Fernanda Castillo‐Martínez, Luz E. Martínez‐Rodríguez, Vianney Ramírez‐Ojeda, Nallely Tello‐Martínez, Rodrigo Lomelí‐Valdez, Jack N Salto-Quintana, Sandra Cadena‐Mota, Daniel E. Noyola,

Congenital Diaphragmatic Hernia Studies

Abstract Background Respiratory syncytial virus ( RSV ) is the leading cause of severe acute respiratory infections ( ARI ) in preterm infants. The incidence of RSV ‐associated hospitalizations has not been defined in Mexico. Objectives To determine the incidence of ARI ‐ and RSV ‐associated hospitalizations in preterm infants during the first year of life. Methods Prospective cohort study of 294 preterm infants followed up through monthly telephone calls and routine outpatient visits. Hospitalized children were identified through daily visits to pediatric wards of participating hospitals and through telephone calls. Respiratory samples were tested for RSV by RT ‐ PCR . Results Mean gestational age of participating infants was 33 weeks. Ninety‐six infants were diagnosed with bronchopulmonary dysplasia ( BPD ) and 17 with congenital heart disease ( CHD ); 11 had both conditions. There were 71 hospitalization episodes in 53 infants. Respiratory samples for RSV detection were available in 44 hospitalization episodes, and the result was positive in 16 (36.3%). At least one hospitalization for ARI was recorded in 33 of 96 participants with BPD , in seven of 17 with CHD , and 18 of 192 infants without these diagnoses. Five (71.4%) of CHD infants who required admission also had BPD . RSV ‐confirmed hospitalization rates were 9.4%, 5.9%, and 2.6% for infants with BPD , CHD , and otherwise healthy preterm infants, respectively. Attributable RSV admission frequencies were estimated to be 13.6%, 16.5%, and 4.1%, respectively. Conclusions Mexican preterm infants, particularly those with BPD , have high rates of ARI ‐ and RSV associated hospitalizations. Specific interventions to reduce the incidence of severe infections in this highrisk group are required.