A 25-year-old woman presents to the emergency room with new symptoms of decreased urine
output, leg edema, and facial swelling. She was previously well and has no significant past
medical history. Laboratory investigations reveal acute kidney injury and a renal biopsy is
performed. Immunofluorescence of the biopsy specimen reveals a granular pattern of immune
complex mediated glomerulonephritis. Which of the following conditions is
most likely to cause this pattern of renal injury?