Compared with previous epidemics, the confirmed cases of this epidemic involve a wide range of people, which also brings great difficulties to the investigation and control of the follow-up epidemic prevention departments. It is said that more than 50% of the source of infection comes from farmers' markets, and more than 20% comes from buses. Everyone must know about farmers' markets and buses, but there are many people coming and going every day, and the mobility is not generally large, so the epidemic situation in Dalian is very serious, which has great spread risks in the whole society.
It is worth noting that the virus infected in this round of epidemic in Dalian is also an evolutionary branch of Omicron BA.5.2. 1 Compared with the previous virus, this mutant strain is not only highly contagious and spreads quickly, but also relatively more concealed. It can be seen from these infected people that most of them are asymptomatic, and even those with symptoms are very mild. Just like this, people can't detect it quickly in the early stage, giving the virus more opportunities to spread.
Not only that, the investigation of the virus by the relevant epidemic prevention departments in Dalian also found that some infected people have a short incubation period after being infected with the virus, and they will be tested positive in a few days. Coupled with family gathering and spread, the epidemic situation has spread widely in the inner city. Although the current epidemic situation is still grim, I believe that the local citizens and the epidemic prevention departments will work together and it will not take long for this round of epidemic to be defeated.