Table 1 Summary of COVID-19 cases and estimates by epidemic wave

Number of cases

 Suspected cases (A)

839,120

1,789,867

2,220,692

2,271,708

1,662,178

8,783,565

 Suspected cases with laboratory test (B)

475,238

1,364,011

2,118,935

1,988,949

1,555,062

7,502,195

 Confirmed cases (C)

264,792

549,962

762,884

1,047,624

771,113

3,396,375

 Hospitalized cases (D)

105,681

143,977

75,836

34,648

13,504

373,646

 Intubated cases (E)

27,437

29,899

15,078

3,804

711

76,929

 In-hospital deaths (F)

47,835

73,160

33,088

12,021

2395

168,499

Estimations

 Testing percentage among suspected cases [B/Ax100] % (95% CI)*

56.6 (56.5, 56.7)

76.2 (76.1, 76.3)

95.4 (95.4, 95.4)

87.6 (87.5, 87.6)

93.6 (93.5, 93.6)

85.4 (85.4, 85.4)

 Positivity percentage among tested cases [C/Bx100] % (95% CI)*

55.7 (55.6, 55.9)

40.3 (40.2, 40.4)

36 (35.9, 36.1)

52.7 (52.6, 52.7)

49.6 (49.5, 49.7)

45.3 (45.2, 45.3)

 Hospitalization among confirmed cases [D/Cx100] % (95% CI)*

39.9 (39.7, 40.1)

26.2 (26.1, 26.3)

9.9 (9.9, 10)

3.3 (3.3, 3.3)

1.8 (1.7, 1.8)

11.0 (10.9, 11.1)

 Intubation among hospitalized [E/Dx100] % (95% CI)*

26.0 (25.7, 26.2)

20.8 (20.6, 21)

19.9 (19.6, 20.2)

11 (10.7, 11.3)

5.3 (4.9, 5.7)

20.6 (20.5, 20.7)

 Hospital case fatality rate [F/Dx100] % (95% CI)*

45.3 (45.0, 45.6)

50.8 (50.6, 51.1)

43.6 (43.3, 44)

34.7 (34.2, 35.2)

17.7 (17.1, 18.4)

45.1 (44.9, 45.3)

 Mean days of hospital admission delay (95% CI)**

4.55 (4.52, 4.57)

5.75 (5.73, 5.77)

5.79 (5.76, 5.82)

3.48 (3.44, 3.52)

2.02 (1.98, 2.06)

5.07 (5.06,5.09)

 Mean in-hospital days (95% CI)**

9.59 (9.54, 9.63)

9.33 (9.29, 9.37)

9.09 (9.04, 9.15)

7.83 (7.75, 7.9)

6.41 (6.31, 6.51)

9.11 (9.09, 9.13)