A 25-year-old G3P2002 woman, at 20-weeks gestational age, presents to a general medical clinic complaining of a new rash and feeling unwell for the past two days. She reports a low-grade fever, malaise, and a generalized itchy rash that started on her trunk and then spread to her face and extremities. The lesions began as small red spots, progressed to fluid-filled blisters, and some are now crusting over. She recalls attending her daughter's birthday party approximately 15 days ago where a child was noted to have a vesicular rash. Her vaccination records confirm no prior varicella vaccination and no history of chickenpox. On examination, her temperature is 38.3°C (100.9°F), blood pressure is 118/76 mmHg, pulse is 98/min, and respirations are 20/min. Physical examination reveals an erythematous, pruritic rash characterized by vesicles, pustules, and crusted lesions in various stages of healing, predominantly on her trunk and face, extending to the scalp and proximal extremities. There is no significant lymphadenopathy or pharyngeal erythema. Given her presentation, what is the most likely diagnosis and the immediate therapeutic management?

A 48-year-old woman with a history of chronic lymphocytic leukemia presents to an urgent care clinic with a 3-day history of fever, malaise, and a generalized pruritic rash. She reports attending a family gathering two weeks prior where a child had active chickenpox. Her medications include amlodipine and atorvastatin. On examination, her temperature is 38.8°C (101.8°F), blood pressure is 128/78 mmHg, pulse is 98/min, and respirations are 18/min. Physical examination reveals an ill-appearing woman with a diffuse, vesicular rash in various stages of healing, predominantly on the trunk and face. Some lesions show crusting, while newer vesicles are still fluid-filled. Auscultation of the lungs reveals clear breath sounds bilaterally. Cardiac exam is unremarkable. Abdominal exam reveals mild splenomegaly. Laboratory results from earlier today show a white blood cell count of 3.2 x 10^9/L with relative lymphocytosis consistent with her CLL, hemoglobin of 128 g/L, and platelets of 180 x 10^9/L. C-reactive protein is 45 mg/L. Varicella-zoster virus PCR from a skin lesion is positive. Given her immunocompromised status and clinical presentation, which of the following is the most appropriate initial management and what potential serious complication should be closely monitored?

A 9-year-old girl is brought to a community health clinic by her father. She was at a birthday party two days ago, where a classmate developed a vesicular rash consistent with chickenpox just hours after the party. Her father is concerned about exposure. The patient's vaccination records indicate she received only one dose of the varicella vaccine at 15 months of age. She has no other significant medical history and denies fever, malaise, or any skin lesions. On examination, her vital signs are stable: temperature 37.10C, heart rate 88/min, respiratory rate 18/min, blood pressure 102/68 mmHg. Physical examination reveals a bright, alert child with no signs of active rash. Auscultation of the chest and abdomen are unremarkable. The oropharynx is clear. Considering her exposure and vaccination status, what is the initial assessment and the most appropriate management strategy for this patient?