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Table 2 Distribution of man biting rates (MBR), sporozoite rates (SR) and annual EIR by malaria strata

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

Malaria strata

Year

Total mosquito tested

Pf positive

SR

MBR

Annual EIR

High

2017

3062

46

0.015

0.220

1.93

 

2018

5517

72

0.013

0.177

1.35

 

2019

2619

18

0.007

0.119

0.49

 

2020

2203

3

0.001

0.219

0.13

 

2021

2621

17

0.006

0.290

1.02

Average (95% CI)

 

3204.4

31.2

0.0084 (0.0041–0.0129)

0.205 (0.1559–0.2554)

0.984 (0.4498–1.5261)

Moderate

2017

172

30

0.174

0.019

1.94

 

2018

3634

104

0.029

0.117

1.99

 

2019

4090

0

0.000

0.000

0.00

 

2020

892

7

0.008

0.089

0.42

 

2021

149

1

0.007

0.016

0.19

Average (95% CI)

 

1787.4

28.4

0.0436 (0.0123–0.0989)

0.0482 (0.0071–0.0878)

0.908 (0.1329–1.6676)

Low

2017

4

0

0.000

0.000

0.00

 

2018

8

0

0.000

0.000

0.00

 

2019

7

0

0.000

0.000

0.00

 

2020

13

0

0.000

0.000

0.00

 

2021

10

0

0.000

0.000

0.00

Average (95% CI)

 

8.4

0

0 (0–0)

0 (0–0)

0 (0–0)

Very Low

2017

1401

4

0.003

0.302

0.53

 

2018

1223

4

0.003

0.039

0.07

 

2019

632

8

0.013

0.029

0.71

 

2020

251

0

0.000

0.000

0.00

 

2021

235

5

0.021

0.039

0.97

Average (95% CI)

 

748.4

4.2

0.008 (0.0012–0.0148)

0.0818 (0.0183–0.1802)

0.456 (0.1279–0.7850)