a decreasing trendP =0.034
Furthermore, there was a statistically significant difference in the occurrence of severe diseases in the 4 stages of the epidemic, and the proportion of severe infections showed a decreasing trend ( P =0.034) ( Table 2 ).
Furthermore, there was a statistically significant difference in the occurrence of severe diseases in the 4 stages of the epidemic, and the proportion of severe infections showed a decreasing trend ( P =0.034) ( Table 2 ).