Infection with "P. vivax", "P. ovale" or "P. malariae" usually does not require hospitalisation. Treatment of "P. vivax" requires both treatment of blood stages (with chloroquine or ACT) and clearance of liver forms with primaquine. Artemisinin-based combination therapy is as effective as chloroquine in treating uncomplicated "P. vivax" malaria. Treatment with tafenoquine prevents relapses after confirmed "P. vivax" malaria. However, for those treated with chloroquine for blood stage infection, 14 days of primaquine treatment is required to prevent relapse. Shorter primaquine regimens may lead to higher relapse rates. There is no difference in effectiveness between primaquine given for seven or 14 days for prevention of relapse in vivax malaria. The shorter regimen may be useful for those with treatment compliance problems.