The seasonal distribution of respiratory viruses
Table 3 shows each virus-positive sample detection relying on the month
before and during COVID-19.
Overall, prevalent respiratory viruses were detected more in winter than
in other seasons, with 30.90% and 33.24% total positive rates before
COVID-19, and 33.24% during COVID-19, respectively. Compared to the
same period prior to COVID-19, the total positive rates in winter during
COVID-19 were not a significant difference (p <0.05). In
2020-2022, the total positive rates in other seasons exhibited a
significant reduction (p < 0.05).
Furthermore, Figure 2 shows that before and during
COVID-19, RSV positive rate in
winter was significantly higher than in other seasons
(p < 0.05).
PIV3
positive rate was higher (2.61%) in summer during
COVID-19, but it was higher
(3.05%) in winter before COVID-19. Conversely, PIV3 positive rate was
lower (0.3%) in the summer during COVID-19, but it was higher (5.76%)
in the summer before COVID-19.