Scientific Study from the year 2025 in the subject Medicine - Pediatrics, grade: Case Presentation, , language: English, abstract: A previously healthy 10-year-old boy presented with progressive left posterior cervical lymphadenitis following recent COVID-19 infection and kitten exposure. Despite oral cefdinir, he developed persistent fever and enlarging lymph nodes. Imaging showed suppurative/partially necrotic adenitis without drainable collection. Hospital therapy with IV ampicillin-sulbactam and azithromycin led to clinical improvement. Serology later returned with high Bartonella henselae titters, consistent with cat-scratch disease (CSD). He was discharged on oral antibiotics with infectious diseases follow-up and completed a 10-day azithromycin course.