In terms of virological characteristics, the BA.5 variant has a stronger replication and transmission capacity than the BA.2 variant. Studies have also shown that BA.5 mutant strains can enter host cells in about 2 minutes, show exponential replication in the upper respiratory tract in about 20-30 minutes, release mature virus particles in infected cells after 12-24 hours, which is what we usually call the start of detoxification, and spread through droplets and aerosols.
Human exposure to the virus, the shorter the time the virus enters the host cell, the more difficult it is for the human immune function to kill the virus, lies in the fact that it takes some time for the human immune capacity to react, and it may be that the human immune capacity does not react and the virus enters the host cell.
After the virus enters the host cell, it will replicate rapidly and keep increasing in the human body, and the rate of this increase will be geometrically multiplied.
The virus does not enter the body and infect others, but needs to be released outward to be infectious. The longer the time to release the virus outward, the less infectious the virus will be, and the shorter the time, the easier the infection may be. BA.5 The virus releases mature virus particles in the infected cells after 12-24 hours, which is what we usually call the beginning of detoxification, and spreads through droplets and aerosols.
That is to say, after 12 hours after the human body is infected by the virus, transmission can occur through interpersonal transmission, so this transmission will be difficult to control in a timely manner, and get the epidemic prevention personnel to find cases, the cases may have become the source of infection and transmit the virus to others.
So as the new coronavirus continues to mutate, prevention is becoming increasingly difficult, so do your personal protection and wear an N95 mask or disposable medical mask according to the situation.