Question

Which species is found in the regions of South America and West Africa and is the least harmful?

• A. P. ovale
• B. P. vivax
• C. P. falciparum
• D. P. malariae

Answer 1

Answer: (B)

P. vivax

P. vivax is found in South America and West Africa and is least harmful among other species of Plasmodium. It causes benign tertian malaria, which attacks every third day, i.e., after 48 hours. Recurrent attacks of fever are called paroxysms. The fever is mild and seldom fatal.