An affordable, quality-assured community-based system for high-resolution entomological surveillance of vector mosquitoes that reflects human malaria infection risk patterns

Table 2 Crude estimates of the costs for each surveillance method per night of trapping and per An. gambiae s.l . caught over the selected period outlined in Figure 2 when all three surveillance systems were simultaneous in operation

Estimated Parameter	Units	Community-based	Quality assured
Estimated Parameter	Units	CB-ITT	QA-ITT	QA-HLC
Number of samples	Person-nights	4284	457	335
Number caught	No. of An. gambiae s.l	171	42	169
Mean catch	No. of An. gambiae s.l per person-night	0.04	0.09	0.50
Volunteer costs	TSh	14,994,000	1,828,000	2,680,000
Salary costs	TSh	10,589,820	13,793,820	24,413,820
Transport costs	TSh	3,100,000	20,340,000	20,340,000
Total Expenditure	TSh	28,683,820	35,961,820	47,433,820
Cost per sample	TSh per night of sampling	6,695.57	78,691.07	141,593.49
Costs per specimen of An. gambiae s.l.	TSh per An. gambiae s.l	167,741.64	856,233.81	280,673.49

All costs are presented in Tanzanian Shillings (TShs). The corresponding estimates of the expeditures in US dollars can be computed at a mean 2010 exchange rate of 1408.02 TShs per US$.

ISSN: 1475-2875