A 6-year-old child presents to the emergency department with a fever of 102°F (38.9°C), generalized pruritic rash, and vesicular lesions in various stages. The parents report the child has not been vaccinated against varicella. What is the BEST course of action for this patient?
Provide supportive care only and discharge with follow-up instructions
Administer oral acyclovir and implement airborne and contact precautions
Prescribe oral antibiotics and antipyretics
Administer varicella-zoster immune globulin (VZIG)