Parasite isolates within each
group had additional polymorphisms that constituted two
or three allelic types. The alleles with matched patient
clinical and laboratory data were analysed and statistically
significant clustering of particular alleles with clinical and
laboratory measures of disease progression was found,
including parasitaemia [1]. This report showed that some
P. knowlesi parasites may be more virulent in the human
host, and that this virulence is associated with certain
parasite genotypes. These findings can now be taken forward
in proof-of-principle testing using in vitro invasion
assays.