Chloroquine and mefloquine resistance profiles are not related to the circumsporozoite protein (CSP) VK210 subtypes in field isolates of Plasmodium vivax from Manaus, Brazilian Amazon
BACKGROUND The central repetitive region (CRR) of the Plasmodium vivax circumsporozoite surface protein (CSP) is composed of a repetitive redken shades 9gi sequence that is characterised by three variants: VK210, VK247 and P.vivax-like.The most important challenge in the treatment of P.vivax infection is the possibility of differential response bas