Table 1.

Prevalence of pfdhfr and pfdhps polymorphisms in imported African isolates.

Gene	Position	Wild type	Mutant type	Mutant isolates(n)	Frequency(%)
pfdhfr	51	AAT	ATT	138	86.79
	59	TGT	CGT	143	89.94
	108	AGC	AAC	156	98.11
pfdhps	431	ATA	GTA	12	7.55
	436	TCT	GCT	43	27.04
	437	GCT	GGT	15	9.43
	540	AAA	GAA	44	27.67
	581	GCG	GGG	14	8.81
	613	GCC	TCC	3	1.89

The bold values stand for mutant nucleic acid base.