Respiratory Syncytial Virus-A ON1 Genotype Emergence in Central Mexico in 2009 and Evidence of Multiple Duplication Events.

Background: Respiratory syncytial virus (RSV) is a leading cause of respiratory infections. An RSV-A genotype (ON1) that contains a 72-nt duplication was reported in 2012 and has since extended worldwide.

Methods: We analyzed 345 respiratory samples obtained between 2003 and 2014 to assess the relevance of ON1 infections.

Intensive Care Unit Admission and Death Rates of Infants Admitted With Respiratory Syncytial Virus Lower Respiratory Tract Infection in Mexico.

Background: Respiratory syncytial virus (RSV) is the most common etiology for acute respiratory infection hospital admissions in young children. Case fatality rates for hospitalized patients range between 0% and 3.4%.