Lymphatic filariasis control in Tanga Region, Tanzania: status after eight rounds of mass drug administration

Parasites & Vectors

Table 4 Vector mosquito catches from the 50 collection houses in Kirare, and the outcome of dissections

Period	Months of collection	No. collected (mean per month)	Mean monthly biting rate	No. dissected	No. infected^a(% of dissected)	No. infective^b(% of dissected)	Mean monthly transmission potential
Pre-MDA (Nov-03 to Sep-04)	11
An. gambiae		2335 (212.3)	49.39	1477	56 (3.8)	20 (1.35)	1.90
An funestus		3385 (207.7)	71.3	2080	94 (4.5)	48 (2.31)	3.47
Cx. quinquefasciatus		2626 (238.7)	53.7	1839	37 (2.0)	9 (0.49)	0.69
Total		8346 (758.7)	174.3	5396	187 (3.5)	11 (1.43)	6.08
Post-MDA 6 (Dec-10 to Nov-11)	12
An. gambiae		416 (34.7)	7.3	387	0 (0.0)	0 (0.0)	0.00
An funestus		74 (6.2)	1.4	74	0 (0.0)	0 (0.0)	0.00
Cx. quinquefasciatus		8492 (707.7)	153.9	7252	2 (0.03)	1 (0.01)	0.05
Total		8982 (748.5)	161.8	7713	2 (0.03)	1 (0.01)	0.05
Post-MDA 7^c	2
An. gambiae		24 (12.0)	5.2	19	0	0	-
An funestus		26 (13.0)	5.7	8	0	0	-
Cx. quinquefasciatus		104 (52.0)	22.7	98	0	0	-
Total		154 (77.0)	33.6	125	0	0	-
Post-MDA 8^d	2
An. gambiae		246 (123.0)	53.6	226	0	0	-
An funestus		0 (0.0)	0.0	0	0	0	-
Cx. quinquefasciatus		1454 (727.0)	316.8	1306	0	0	-
Total		1700 (850.0)	370.4	1532	0	0	-

Mosquitoes were collected in all four hamlets of Kirare. Results shown are from the full pre-MDA and post-MDA 6 periods as well as from two months of collection during the peak mosquito seasons in 2012 and 2013. Results from the post-MDA 1–5 periods were given in [16],[18].
^aWith any larval stage (L1, L2, L3) of W. bancrofti; ^bWith L3 larval stage of W. bancrofti.
^cJune/July, 2012 (42 sampling nights; 420 trap nights); ^dMay/June, 2013 (42 sampling nights; 420 trap nights).

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