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Volume 19, Number 7—July 2013


Quantifying Effect of Geographic Location on Epidemiology of Plasmodium vivax Malaria

Andrew A. LoverComments to Author  and Richard J. Coker
Author affiliations: Saw Swee Hock School of Public Health, National University of Singapore, Singapore (A.A. Lover, R.J. Coker); London School of Tropical Medicine and Hygiene, Bangkok, Thailand (R.J. Coker)

Main Article

Table 1

Infection data recorded for 677 case-patients in historical studies of Plasmodium vivax infection, circa 1920–1980*

Infection data No. (%) patients
Neurosyphilis/neurologic treatment patient
433 (64.0)
Recorded data
Exact incubation period only 356 (52.6)
Time to relapse only 217 (32.1)
Exact incubation and time to relapse
104 (15.4)
Infected with
Tropical strains 275 (40.6)
Temperate strains 402 (59.4)
New World strains 181 (26.7)
Old World strains 496 (73.3)

*The study population was followed for a mean of 82.5 weeks (SD 31.7, range 2.0–173.0).

Main Article