The situation that the next close contact needs to be isolated needs to be judged according to the specific situation.
First, secondary close contacts refer to contacts with contacts of confirmed cases, that is, those who have had contact with primary close contacts. According to the transmission characteristics of the disease, people in close contact with each other may also be infected with the virus, so risk assessment and isolation measures are required.
Secondly, it needs to be evaluated according to the time, place, frequency, distance and other factors of contact between the second close contact person and the confirmed case. If the second close contacts contact the confirmed cases for a long time, close distance, and no effective protective measures are taken, their infection risk is high, and they need to be isolated for observation.
Finally, it is necessary to judge whether the close contacts need to be isolated according to the local epidemic prevention and control policies and regulations. Some areas may isolate all contacts, while others may isolate only high-risk contacts.
In a word, the next close contacts need to conduct risk assessment and decide whether isolation observation is required according to the specific situation and local policies.
