Why do experts say that everyone should confess? Where does this basis come from?

Experts say that the reason may be that the Omicron virus is highly contagious. Compared with the original mutant, the infectivity of Omicrovirus may be increased, even more terrible than the existing Delta. After research, it was found that the variant of the virus may be 500% highly contagious, which is also a very alarming infectious data, so the infectivity is still relatively high. But in short, take protective measures and try not to be infected.