What is the approximate percentage of visits to the ED for patients younger than 15 years in which fever is the chief complaint?

Which of the following is the most common cause of serious bacterial infections in febrile infants younger than 24 months?

A well-appearing immunocompetent infant (11 months old) presents to the ED with fever (≥38.0° C [100.4° F]). Which of the following characteristics would identify this patient as having increased risk for a urinary tract infection (UTI)?

Which of the following tests should not be used to make a preliminary diagnosis of a UTI for a well-appearing febrile infant (18 months old)?

Clinicians should consider ordering a chest radiograph for the evaluation of well-appearing immunocompetent infants and children aged 2 months to 2 years presenting with fever (≥38.0° C [100.4° F]), no obvious source of infection, and who also have certain symptoms.

In this clinical scenario which of the following symptoms should not lead a clinician to order a chest radiograph?

Should clinicians order a chest radiograph as part of the patient evaluation for well-appearing immunocompetent infants and children aged 2 months to 2 years presenting with fever (≥38.0° C [100.4° F]) and wheezing or a high likelihood of bronchiolitis?