What is the current epidemic situation?

At present, the global COVID-19 epidemic shows unprecedented complexity. In countries represented by the United States, Brazil and India, the epidemic has not shown signs of slowing down, while in countries represented by Spain, Japan and South Korea, a second wave of epidemic has emerged.

It is against this background that after China won the anti-epidemic victory, local epidemics appeared in Lan Shu, Beijing, Urumqi and Dalian. The reasons are as follows:

1. The virus may have been lurking in various places and will be "awakened" under certain conditions.

Covid-19 was detected by foreign experts from the wastewater in Europe and the United States in the first half of 219, which shows that the virus may already exist in all parts of the world, and once the conditions are ripe, they will be "awakened" and spread everywhere.

Several recent outbreaks in China may have inadvertently turned on their switches and "released" viruses.

2. People's minds have been relaxed for a long time.

Even in Wuhan, which was once in the eye of the storm in COVID-19, people's psychological awareness of virus prevention declined after the nationwide nucleic acid investigation. In addition, the hot weather made many people take off their masks in public places. Wuhan people are still so, outsiders must be more relaxed, thinking that the virus will not make a comeback, so they slackened their psychological precautions, which gave COVID-19 a chance to "make a comeback".

3. The epidemic situation abroad is serious, and the risk of virus import is high.

There is a saying on the Internet that China has become the safest place in the world. As a result, a large number of vagrants and international students want to go home, and even some foreigners want to squeeze into China to avoid it. A plane ticket for returning home has been fried to tens of thousands or even hundreds of thousands. This undoubtedly increased the difficulty of prevention and control. At one time, all new cases in China were imported. Although we have established the isolation system, it is still hard to prevent.

4. Covid-19 is so cunning that we know little about him.

at one time, according to routine analysis, the incubation period was about 14 days, but in actual cases, some cases were latent for more than one month. At one time, we thought that when the weather turned hot, it would disappear like SARS, but it was still erupting in midsummer.