Malaria is one of the most common infectious diseases in the world, and severe respiratory complications have been described mainly in association withPlasmodium falciparum. We describe a case of acute respiratory distress syndrome complicating infection withP. vivaxin the setting of relatively low parasitemia in a 47-yr-old woman after a brief trip to Papua New Guinea. A review of the literature shows that pulmonary complications ofP. vivaxare rare but occur more frequently than generally acknowledged. Pathogenic mechanisms of these complications are discussed.