Although the treatment options have increased, and the virulence of
Omicron variant decreased significantly, the infection still causes
deaths among the most vulnerable population2. An
undiagnosed heart condition associated with adrenergic stimulus caused
by high-intensity exercises can lead to sudden cardiac
death3. So it’s still important to protect ourselves
to avoid infection or reduce the infection times under the new
prevention and control measures.
In conclusion, the adjustment on the prevention and control measures
resulted in rapid increase of SARS-CoV-2 infection rate among
hospitalized children through the first three weeks, and it took nearly
eight weeks for the infection to recover to the rate at the beginning of
the adjustment. Continuous monitoring of the infection is required in
the future to help reduce the infection.