Why is the epidemic serious now?

Countries represented by the United States, Brazil and India show no signs of slowing down, while countries represented by Spain, Japan and South Korea have seen a second wave of epidemics.

It is against this background that after China won the victory in fighting the epidemic, local epidemics occurred in Lan Shu, Beijing, Ukraine and Dalian. The reason for this is the following：

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

Some foreign experts detected COVID-19 from the wastewater in Europe and America in the first half of 20 19, indicating that this virus may have existed all over the world for a long time. Once the conditions are ripe, it will be "awakened" and spread everywhere.

The recent outbreaks in China may have inadvertently turned on the switch and "released" the virus.

2. The case has been clarified for a long time, and people's minds have relaxed.

Even in Wuhan, which was once mired in the center of COVID-19 storm, people's anti-virus psychology declined after nationwide nucleic acid screening. In addition, the hot weather makes many people take off their masks in public places.