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Volume 17, Number 10—October 2011
Research

Plasmodium knowlesi Malaria in Humans and Macaques, Thailand

Somchai JongwutiwesComments to Author , Pattakorn Buppan, Rattiporn Kosuvin, Sunee Seethamchai, Urassaya Pattanawong, Jeeraphat Sirichaisinthop, and Chaturong Putaporntip

Author affiliations: Chulalongkorn University, Bangkok, Thailand (S. Jongwutiwes, P. Buppan, R. Kosuvin, U. Pattanawong, C. Putaporntip); Naresuan University, Phitsanulok, Thailand (S. Seethamchai); Vector Borne Disease Training Center, Saraburi, Thailand (J. Sirichaisinthop)

Main Article

Table 4

Parasite densities of patients with Plasmodium knowlesi monoinfection and co-infection with other malaria species, Thailand, October 2008–September 2009*

Category Parasite density, parasites/μL†
Geometric mean Ratio of geometric means‡ Range
P. knowlesi monoinfection, n = 10
 4,165
 NA
 0–145,000
P. knowlesi co-infection with
P. falciparum, n = 11 1,632 2.55 440–6,560
P. vivax, n = 9 1,686 2.47 320–13,120
P. falciparum and P. vivax, n = 5
 487
 8.55
 320–1,520
All co-infections, n = 25 1,271 3.28 320–13,120

*NA, not applicable.
†Parasite densities between categories were not significantly different (p>0.05, by Mann-Whitney U test).
‡Ratio of parasite densities of monoinfection to co-infection.

Main Article

Page created: September 20, 2011
Page updated: September 20, 2011
Page reviewed: September 20, 2011
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