No Genetic Bottleneck in Plasmodium falciparum Wild-Type Pfcrt Alleles Reemerging in Hainan Island China following High-Level Chloroquine Resistance

摘要

Chloroquine-resistant Plasmodium falciparum was highly prevalent in Hainan, China, in the 1970s. Twenty-five years after cessation of chloroquine therapy, the prevalence of P. falciparum wild-type Pfcrt alleles has risen to 36% (95% confidence interval, 22.1 to 52.4%). The diverse origins of wild-type alleles indicate that there was no genetic bottleneck caused by high chloroquine resistance.