Knowing that it is positive, secretly picking up hundreds of people to escape from Shanghai and committing a heinous crime, what are the legal consequences?

Knowing that he was positive, he secretly contacted hundreds of people in order to escape from Shanghai. After the initial screening of catastrophic disasters, he still returned to China by train, resulting in two people being infected and more than 200 people being secretly contacted. He was once taken criminal compulsory measures by Putian police in Fujian. On the 27th, after being tested positive for nucleic acid in Shanghai, he returned to Putian by train without cooperating with the notice of nucleic acid review from relevant departments, causing serious consequences.

What are the legal consequences? What legal responsibilities should I bear? The police initially identified it as a crime of obstructing the prevention and treatment of infectious diseases. This charge refers to an act that violates the relevant provisions of the Law on the Prevention and Control of Infectious Diseases and causes the spread of Class A infectious diseases or has a serious risk of spread. This is a negligent crime. Although the perpetrator deliberately violated the laws and regulations on the prevention and treatment of infectious diseases, he did not want to see the spread of infectious diseases.

It's just that he should have foreseen that his behavior might cause the spread of infectious diseases, but he neglected to foresee it, or he thought it could be avoided when he met it, which caused the spread of infectious diseases or had great spread risks.

In this case, Zeng was initially screened for nucleic acid positive, but has not yet been diagnosed. I should have known that if I didn't abide by the epidemic prevention regulations, going in and out of public places would probably lead to the spread of the epidemic, but he blindly thought that this result could be avoided, which eventually led to the serious consequences of two people being infected and more than 200 people being in close contact.

It must be pointed out that negligent crime belongs to consequential crime, and it does not constitute a crime if there is no criminal result. For example, the crime of negligent death, if the victim did not die, the actor naturally does not constitute the crime. In other words, although Zeng was positive in the initial screening, as long as he was not diagnosed in the end, did not cause infection to others, and did not cause close contact with many people, it did not constitute a crime, and he only needed to be punished according to the provisions of the Law on Public Security Administration Punishment.

However, the serious consequences of this case have already occurred. Therefore, we had to accept legal sanctions for our actions. While investigating Zeng's legal responsibility, we can't help but ask that the epidemic situation in Shanghai is already obvious. Which link has been omitted so that a nucleic acid-positive person can take the bullet train?