Table 4.

Characteristics of batches available in two human challenges. Percentages and means were calculated from 70 mosquitoes per batch

Mosquito batches	Infectious screening	% Infected mosquitoes	Mean oocyst/mosquito	% Infected mosquitoes	Mean spz/mosquito
1	Neg	85.0	21.1	97.3	824
2	Neg	85.5	22.5	94.7	20
3	Neg	71.0	18.1	86.5	1,043
4	Neg	88.1	18.2	84.2	2,034
5	Neg	72.0	38.9	78.9	3,773
6	Neg	69.7	45.5	68.4	883
7	Neg	76.0	15.4	63.2	4,582
8	Neg	69.7	5.4	55.3	407
9	Neg	57.9	6.4	15.8	20
10	Neg	52.6	3.6	47.4	55
11	Neg	53.9	4.6	44.7	407
12	Neg	38.5	2.5	47.4	48
13	Neg	46.1	2.7	21.1	146
14	Neg	23.7	1.2	31.6	429
15	Neg	62.9	2.6	ND	ND
16	Neg	74.3	7.2	ND	ND
17	Neg	18.9	0.2	ND	ND
18	Neg	13.3	0.4	ND	ND
19	Neg	4.0	0.2	ND	ND
20	Neg	0.0	0.0	ND	ND
21	Neg	6.6	0.4	ND	ND
22	Neg	1.3	2.9	ND	ND
23	Hepatitis B	78.7	20.9	ND	ND
24	Hepatitis B	84.0	9.4	ND	ND
25	Hepatitis B	90.0	43.2	ND	ND
26	Hepatitis B	10.5	0.5	ND	ND
27	Hepatitis B	59.2	3.9	ND	ND
28	Hepatitis B	48.7	2.9	ND	ND
29	Hepatitis B, C	5.3	3.9	ND	ND
30	Syphilis	6.7	0.1	ND	ND
31	Syphilis	78.9	22.4	ND	ND
32	Syphilis + HTLV	80.3	32.1	ND	ND
33	HTLV 1-2	89.3	26.2	ND	ND