A nurse is caring for a group of children. Which of the following children should the nurse recognize as at risk for developing acute poststreptococcal glomerulonephritis?

A 7-year-old child who is recovering from impetigo

A 16-year-old adolescent who has appendicitis

A 2-month-old infant who has pyloric stenosis

An 18-year-old adolescent who is in the second trimester of pregnancy