TABLE 2.
Comparison of seasonal distribution of RV-positive between the pre-COVID-19, COVID-19, and post-COVID-19 periods
| Pre-COVID-19 | COVID-19 | Post-COVID-19 | Total | χ2 value | P value | |||
|---|---|---|---|---|---|---|---|---|
| 2019 | 2020 | 2021 | 2022 | 2023 | 14,735 | <0.001 | ||
| January | 1,770/4,442 (39.85) | 1,043/2,754 (37.87) |
949/2,979 (31.86) |
291/1,684 (17.28) |
12/649 (1.85) |
4,065/12,508 (32.50) |
601.85 | <0.001 |
| February | 1,336/3,360 (39.76) |
57/388 (14.69) |
796/2,376 (33.50) |
324/1,329 (24.38) |
51/1,321 (3.86) |
2,564/8,774 (29.22) |
666.99 | <0.001 |
| March | 988/3,210 (30.78) |
39/497 (7.85) |
561/2,194 (25.57) |
505/2,126 (23.75) |
101/1,533 (6.59) |
2,194/9,560 (22.95) |
416.75 | <0.001 |
| April | 391/2,575 (15.18) |
28/586 (4.78) |
220/1,988 (11.07) |
187/1,484 (12.60) |
137/1,717 (7.98) |
963/8,350 (11.29) |
83.2 | <0.001 |
| May | 79/2,274 (3.47) |
25/746 (3.35) |
61/1,941 (3.14) |
114/1,519 (7.50) |
108/2,082 (5.19) |
387/8,562 (4.52) |
50.17 | <0.001 |
| June | 23/1,821 (1.26) |
4/754 (0.53) |
16/1,925 (0.83) |
35/1,631 (2.15) |
35/2,374 (1.47) |
113/8,505 (1.33) |
16.05 | 0.003 |
| July | 19/1,953 (0.97) |
3/986 (0.30) |
17/2,102 (0.81) |
78/1,754 (4.45) |
22/2,052 (1.07) |
139/8,847 (1.57) |
119.76 | <0.001 |
| August | 7/1,553 (0.45) |
5/1,299 (0.38) |
10/1,883 (0.53) |
42/1,957 (2.15) |
8/890 (0.90) |
72/7,582 (0.99) |
41.83 | <0.001 |
| September | 3/1,368 (0.22) |
9/1,566 (0.57) |
8/1,794 (0.45) |
40/1,914 (2.09) |
60/6,642 (0.90) |
43.33 | <0.001 | |
| October | 7/2,100 (0.33) |
23/1,694 (1.36) |
25/1,945 (1.29) |
23/1,879 (1.22) |
78/7,618 (1.02) |
13.8 | 0.003 | |
| November | 56/2,534 (2.21) |
19/1,291 (1.47) |
49/2,036 (2.41) |
19/2,271 (0.84) |
143/8,132 (1.76) |
19.73 | <0.001 | |
| December | 662/2,873 (23.04) |
114/1,464 (7.79) |
84/1,661 (5.06) |
8/971 (0.82) |
868/6,969 (12.46) |
528.43 | <0.001 | |