Table 2.
Infection prevalences for Plasmodium vivax early sporogonic life-stages developing within Anopheles mosquitoes. The total numbers of mosquitoes examined per life-stage are given in parentheses. HIGH = volunteers who, at the time of donating blood, would be most likely to perpetuate P. vivax transmission in nature (i.e., yielding ≥ 1 oocyst per mosquito in A. dirus). LOW = volunteer blood that would not be likely to perpetuate transmission in nature (i.e., yielding < 1 oocyst per mosquito in A. dirus).
| Mosquito Species | Number of Volunteers | Round stage | Ookinete | Oocyst |
| HIGH | ||||
| A. dirus | 10 | 88.1% (637) | 78.6% (637) | 53.8% (513) |
| A. minimus | 5 | 89.3% (150) | 78.0% (150) | 56.4% (55) |
| A. sawadwongporni | 6 | 90.4% (167) | 81.4% (167) | 29.4% (34) |
| LOW | ||||
| A. dirus | 5 | 21.7% (420) | 7.4% (420) | 3.2% (910) |
| A. minimus | 4 | 28.2% (252) | 12.7% (252) | 2.8% (71) |
| A. sawadwongporni | 1 | 3.4% (29) | 0.0% (29) | Not determined |