Typically, the first sign of infection in infants with respiratory syncytial virus (RSV) is

Correct Answer: A

Rationale: Rhinorrhea is typically the initial symptom of RSV in infants.

Correct Answer: B

Rationale: Coxsackievirus A16 is the most frequent cause of hand-foot-mouth disease.

Correct Answer: C

Rationale: VLBW is defined as <1500 g (C), a standard neonatal threshold distinguishing high-risk preterm infants from low birth weight (<2500 g, E) or extremely low birth weight (<1000 g, not listed).

Correct Answer: B

Rationale: A bifid uvula often indicates a submucosal cleft (B), a subtle palate anomaly, more directly than laryngomalacia (A), chromosomal issues (C), TEF (D), or neurologic defects (E).

Correct Answer: C

Rationale: Cephalhematoma features soft swelling (A), subperiosteal bleeding (B), fracture association (D), and resolution in weeks to months (E). It doesn’t cross suture lines (C), unlike caput succedaneum.