Plasmodium vivax CSP-Pvs25 variants from southern Mexico produce distinct patterns of infectivity for Anopheles albimanus versus An. pseudopunctipennis, in each case independent of geographical origin

Table 1 Plasmodium vivax infected blood: parasitaemia, gametocytaemia and exflagellation rates for each parasite genotype

Blood infection with P. vivax genotypes: cspVk/Pvs25-130	n	Median (IQR) of parasites/μl of blood	Median (IQR) of gametocytes/μl of blood	n	Median (IQR) of exflagellations/μl of blood
Vk210/Pvs25-A^a	9	5040 (4400–6960)	225 (113–288)	10	36 (12–116)
Vk210/Pvs25-B	16	4360 (2800–6000)	218 (116–628)	16	18 (4–50)
Vk247/Pvs25-B^b	54	8000 (4640–14,640)	617 (259–1120)	50	42 (20–152)

Notes: Parasitaemia was higher with genotype Vk247/Pvs25-B versus Vk210/Pvs25-B (P = 0.003). Gametocytaemia was higher with genotype Vk247/Pvs25-B versus Vk210/Pvs25-A (P = 0.022) or Vk210/Pvs25-B (P = 0.037). There were no differences in the number of exflagellations between genotypes (P = 0.086). Kruskal-Wallis test by ranks (95% CI)
^aParasitaemia and gametocytaemia were missing from one sample
^bThe exflagellation values were missing from four samples
Abbreviation: n, number of parasite isolates

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