The United States has issued a top travel warning proposal not to travel to Japan. Why does the United States send it like this?

The United States has issued a top travel warning proposal not to travel to Japan. Why does the United States send it like this? The United States issued the highest travel warning this time, asking tourists not to go to Japan. This matter naturally attracted the attention of many people. There are several comprehensive reasons. Let me introduce it to you for your reference:

First, Japan did not take perfect measures to control the epidemic, which made the epidemic spread in Japan, so the United States issued such a severe warning:

Generally speaking, Japan did quite well in the first phase of the COVID-19 epidemic, but later Japan relaxed its control over the COVID-19 epidemic. They even fully open the border, and tourists from any country can come to Japan to play. This very lax epidemic prevention measures led to the second wave of COVID-19 epidemic in Japan. Therefore, the lack of overall government control will naturally lead to the recurrence of the COVID-19 epidemic. The United States is very worried about Japan's epidemic prevention attitude, so it will let Americans avoid traveling to Japan. At present, the epidemic situation in Japan is still very serious, and even concentrated outbreaks have occurred in many areas. Therefore, the United States will take such drastic measures.

Second, the epidemic situation in Japan is very serious now, and even a mutated virus has appeared, which is very harmful to the human body. Therefore, the United States will issue a severe warning:

COVID-19's ability to spread the epidemic itself is very strong, but a more terrible COVID-19 virus variant has appeared in Japan, which is more harmful to human body. Under such circumstances, the United States can't ignore this phenomenon, which is why they will issue the most severe warning and hope that tourists will not go to Japan. Now the Japanese mutant virus has begun to spread gradually, and it has appeared in various regions of Japan, so it is possible to avoid contracting the mutant virus only by not traveling to Japan. The United States made the highest-level travel warning this time, in fact, in order to protect Americans from being infected by the Japanese epidemic.

Third, the mutant virus is terrible and probably highly contagious. If Americans travel to Japan, they are likely to bring the virus home:

According to the research of scientists, the mutant virus is very contagious after it appears in Japan, so it will be a terrible thing for Americans to bring the virus back to the United States once they travel to Japan. For security reasons, the United States has put forward the highest level of travel warning, which is very normal. Because this virus may break out at any time and anywhere, is COVID-19 vaccine effective for this virus? It's hard to say yet, so the United States will fully warn tourists to go to Japan.