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Table 4 Average daily percentage growth of confirmed cases in different periods in selected 5 countries (unit: %)

From: Measuring the worldwide spread of COVID-19 using a comprehensive modeling method

Levels

Countries

The day of the first case— Mar 31

Apr 1—Jun 30

Jul 1—Sep 30

High

Brazil

28.70

6.06

1.33

Middle

US

18.61

2.80

1.10

Low

Iran

27.12

1.75

0.76

Syria

25.89

3.78

2.97

Mauritania

10.47

7.54

0.57