Dynamics of malaria vector composition and Plasmodium falciparum infection in mainland Tanzania: 2017–2021 data from the national malaria vector entomological surveillance

Table 1 Distribution of man biting rate (MBR), sporozoite rates (SR), and annual EIR by malaria vector species

Mosquito species	Year	Total mosquito tested	Pf positive	SR	MBR	Annual EIR
An. gambiae s.s.	2017	1023	24	0.023	0.110	1.48
	2018	2320	22	0.009	0.074	0.39
	2019	1061	8	0.008	0.048	0.22
	2020	355	0	0.000	0.035	0.00
	2021	434	2	0.005	0.072	0.21
Average (95% CI)		1038.6	11.2	0.009	0.0678	0.46
An. arabiensis	2017	3047	48	0.016	0.164	1.54
	2018	5299	142	0.027	0.128	2.02
	2019	2884	18	0.006	0.098	0.34
	2020	1266	2	0.002	0.094	0.11
	2021	1150	3	0.003	0.095	0.17
Average (95% CI)		2729.2	42.6	0.0108	0.1158	0.836
An. funestus s.s.	2017	569	8	0.014	0.123	1.01
	2018	2763	16	0.006	0.089	0.31
	2019	3403	0	0.000	0.154	0.00
	2020	1738	8	0.005	0.129	0.38
	2021	1431	18	0.013	0.158	1.20
Average (95% CI)		1980.8	10	0.0076	0.1306	0.58

Pf Plasmodium falciparum, MBR Man biting rate, EIR entomological inoculation rate, CI = confidence interval

ISSN: 1475-2875