Four tourists were found to be nucleic acid positive in Ali, Tibet. How were they infected?

Introduction: Since the epidemic lasts for a long time, many people are very concerned about the dynamics of the epidemic. Netizens who pay attention to current social affairs may have noticed such shocking news. It was discovered that four tourists in Ali, Tibet, tested positive for nucleic acid. As soon as this news was released, it attracted the attention and discussion of many netizens. Due to Tibet's unique scenery, many people choose to travel to Tibet. Since there are more people traveling, the chance of contracting COVID-19 is higher.

In many discussions, many people are more concerned about how these four tourists were infected. Although many people find this question a bit difficult, I think it is still easy to answer. The reason why these four tourists were infected may be mainly due to these three aspects. The first aspect is that outsiders carry the new coronavirus. According to relevant news reports, these four tourists are all foreign tourists. It can be seen that these four tourists may have been infected due to close contact with foreigners carrying the new coronavirus.

If these four tourists did not have close contact with outsiders carrying the new coronavirus, then these four tourists should not be infected with the new coronavirus. Since these four tourists are asymptomatic infections, these four tourists may have had close contact with outsiders carrying the new coronavirus. The second aspect is that these four tourists may have had close contact with infected people. Although the local area has implemented relevant epidemic prevention and control policies, people may not strictly abide by these epidemic prevention and control policies.

If an infected person comes into contact with other people, they may also infect other people. If these four tourists have close contact with infected people, then these four tourists will become new asymptomatic infections. The third aspect is that these four tourists came into contact with infected animals. Although COVID-19 mainly infects humans, COVID-19 can also infect animals. If animals are infected with the new coronavirus, the infected animals may transmit the new coronavirus to humans. If these four tourists come into contact with infected animals, then these four tourists will become new asymptomatic infections.