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Table 1 Frequencies of Plasmodium falciparum and Plasmodium vivax field isolates from Manaus, Amazonas State, Brazil, with IC50 of commonly used anti-malarial drugs determined in 2004, 2005, 2006 and 2007

From: Use of a colorimetric (DELI) test for the evaluation of chemoresistance of Plasmodium falciparum and Plasmodium vivax to commonly used anti-plasmodial drugs in the Brazilian Amazon

  2004 nd/n (%) 2005 nd/n (%) 2006 nd/n (%) 2007 nd/n (%) Total nd/n (%)
P. falciparum 16/30 (53) 18/19 (94) 20/22 (91) 16/17 (94) 70/88 (80)
P. vivax 11/23 (48) 24/44 (55) 32/38(84) 65/73(89) 132/178 (74)
  1. nd: number of samples with IC50 determined; n: number of total samples (percentage).