A 30-year-old man from the Solomon Islands presents with malaria. Blood film shows P. vivax. He is treated with chloroquine but experiences recurrence...

Question

A 30-year-old man from the Solomon Islands presents with malaria. Blood film shows P. vivax. He is treated with chloroquine but experiences recurrence of parasitaemia 21 days later despite adequate drug levels. What is the most likely explanation?

Accepted Answer

Chloroquine-resistant P. vivax

Answer

Relapse from hepatic hypnozoites

Answer

Re-infection from a new mosquito bite

Answer

Misidentification of P. falciparum as P. vivax

Answer

Co-infection with P. malariae causing long-term parasitaemia

uk-dtmh MCQ (SBA): Chloroquine-resistant P. vivax

A 30-year-old man from the Solomon Islands presents with malaria. Blood film shows P. vivax. He is treated with chloroquine but experiences recurrence of parasitaemia 21 days later despite adequate drug levels. What is the most likely explanation?