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Table 6 Top 20 most productive countries in Lassa fever research

From: Bibliometric analysis of global Lassa fever research (1970–2017): a 47 – year study

Country

No of documents

%

United States

450

40.87

Undefined

261

23.71

United Kingdom

117

10.63

Germany

96

8.72

Nigeria

65

5.90

Sierra Leone

54

4.90

France

44

4.00

Canada

32

2.91

Switzerland

32

2.91

Netherlands

22

2.00

Guinea

21

1.91

Japan

21

1.91

Sweden

18

1.63

South Africa

17

1.54

Belgium

16

1.45

Italy

12

1.09

Liberia

12

1.09

Australia

10

0.91

India

10

0.91

China

9

0.82