Of the following vaccines, the one recommended to be given to a 10-month-old unimmunized boy is

Of the following vaccines, the one recommended to be given to a 10-month-old unimmunized boy is

A 16-year-old female with a past history of hypothyroidism now manifests fever, anorexia, amenorrhea, and jaundice of 4 months' duration. Her direct bilirubin level is 6 mg/dL, and her total bilirubin value is 11 mg/dL. Results of the tests for hepatitis A, B, and C are negative, and her serum IgG level is 16.5 g/L. The most likely diagnosis is

A 2-year-old female was well until 12 hours ago, when lethargy, vomiting, and intermittent crying episodes began during which she appears to be in pain. During these painful episodes, she draws her legs up to her abdomen. In the office, she passes a maroon-colored stool and has a slightly tender but full abdomen. The most likely diagnosis is

An asymptomatic 2-year-old swallowed a hearing aid battery 4 hours previously. A radiograph at 11:00 p.m. located it in the upper third of the esophagus. The most appropriate next step is to

The investigations to be done as part of initial evaluation of a newly identified 12-year-old girl with obesity are the following EXCEPT