Background Recent studies suggest a role for vitamin D in innate immunity, including the
prevention of respiratory tract infections (RTIs). We hypothesize that serum 25-hydroxyvitamin …

OBJECTIVE: To examine temporal trend in the national incidence of bronchiolitis
hospitalizations, use of mechanical ventilation, and hospital charges between 2000 and 2009. …

Objective To determine whether hospital length of stay (LOS) for acute bronchiolitis is
influenced by the infecting pathogen. Design A prospective observational cohort study was …

OBJECTIVE: Single-center studies have suggested that hypovitaminosis D is widespread.
Our objective was to determine the serum levels of 25-hydroxyvitamin D (25[OH]D) in a …

OBJECTIVES. Although bronchiolitis is the leading cause of hospitalization for infants, there
are limited data describing the epidemiology of bronchiolitis hospitalizations, and the …

OBJECTIVE: We evaluated vitamin D insufficiency in a nationally representative sample of
women and assessed the role of vitamin supplementation. STUDY DESIGN: We conducted …

Over the past decade, interest has grown in the role of vitamin D in many nonskeletal medical
conditions, including respiratory infection. Emerging evidence indicates that vitamin D-…

OBJECTIVES: To investigate the temporal trend in the national incidence of bronchiolitis
hospitalizations, their characteristics, inpatient resource use, and hospital cost from 2000 …

OBJECTIVE: To identify factors associated with continuous positive airway pressure (CPAP)
and/or intubation for children with bronchiolitis. METHODS: We performed a 16-center, …

Methods Clinical and demographic characteristics and viral testing data were obtained from
medical record data from a freestanding children’s hospital in Boston, Massachusetts …