Fact sheet: Relapse, Reinfection or recrudescence

07 Jun 2019
Medicines for Malaria Venture

For P. vivax there is no method for distinguishing between a recrudescence (recurrence of the initial infection owing to inadequate anti-malarial treatment as a result of parasites not cleared during the treatment, relapse (hypnozoite reactivation) or re-infection (new infection transmitted by a mosquito).