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Table 1 Clinical aspects, infectivity mosquitoes and prevalence of asexual and sexual stages detected by microscopy and/or molecular biology tools in samples from symptomatic and asymptomatic malaria vivax patients
| Symptomatic (n = 42) | Asymptomatic (n = 25) | |
|---|---|---|
| Male, n (%) | 31 (74) | 14 (56) |
| Age group (%) | ||
| < 25 | 12 | 24 |
| 25–34 | 24 | 28 |
| > 34 | 64 | 48 |
| Mean | 39 | 34.7 |
| Malaria previous episodes (%) | 88 | 84 |
| Mean of malaria episodes | 4 | 9 |
| Symptoms (%) | ||
| Fever | 93 | 0 |
| Headache | 31 | 12 |
| Chills | 52 | 0 |
| No. of dissected guts, mean ± SD (range) | 27.6 ± 13.3 (11–85) | 28.5 ± 13.1 (7–60) |
| Oocyst intensity, mean ± SD (range) | 7.8 ± 18.1 (0–70) | 2.1 ± 7.3 (0–35) |
| Parasite density by microscopy (parasites/μl), mean ± SD (range) | ||
| Assexual forms, mean ± SD (range) | 2454 ± 3148 (165–13,524) | 249 ± 724 (0–3128) |
| Gametocytes, mean ± SD (range) | 152 ± 130 (8–577) | 13 ± 33 (0–151) |
| PCR parasite density (copies/μl) | ||
| 18S rDNA, mean ± SD (range) | 14,134 ± 75,180 (1446–478,640) | 2446 ± 5495 (0.7–20,627) |
| Pvs25, mean ± SD (range) | 8937 ± 31,745 (505–175,571) | 2711 ± 3444 (1–10,858) |
