<prompt> Incubation period of plasmodium vivax is -5-7 days7-10 days8-17 days15-30 dasy  <response>: Incubation period For falciparum malaria : 9-14 days Vivax malaria : 8-17 days Quaan malaria : 18-40 days Ovalr malaria : 16-18 days Ref: PARK;S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICINE 23rd edition , page 260 