What do systematic reviews say?

Extended vs short‐duration valganciclovir

Extended showed no clear difference in opportunistic infections compared with short‐duration valganciclovir (low certainty).

• Antiviral medications for preventing cytomegalovirus disease in solid organ transplant recipients 2024 · Cochrane Headline outcomes only
  RR 0.71 [0.33, 1.57]
  2 studies · 456 participants
  Low