Massive Dragnet Screening of Potential Virus Carriers

From February 17 to 19, Wuhan launched a massive dragnet screening of potential virus carriers among its residents in every community, "leaving no one unscreened." This follows the belief that "saving lives is of paramount importance," and the principle of getting all confirmed cases hospitalized for treatment.

This large-scale screening was conducted in search of the four groups of people (i.e. confirmed cases, suspected cases, febrile patients who cannot rule out the possibility of infection, and close contacts), in order to ensure 100 percent of admission for confirmed cases, 100 percent of nucleic acid tests for suspected cases, 100 percent of diagnosis for febrile patients, 100 percent of isolation for close contacts, and 100 percent of 24-hour close-off management of communities and villages.

By the use of AI technology, the investigation was conducted with great efficiency, and reached approximately 10 million people in more than 3,300 communities and villages within three days. Based on the big data platform, the information collected was integrated with the records kept in the hospitals, disease control centers, medical insurance agencies, public security and civil affairs authorities, telecommunication carriers and other relevant units. Targeted nucleic acid tests and epidemiological studies were carried out on the four groups of people, which helped to accurately and rapidly find close contacts and isolate them without delay, therefore effectively identifying and blocking the infection source.

集中拉網式大排查

2020年2月17日至19日, 武漢市展開集中拉網式大排查, 對各區各街道轄區居民進行篩查甄別，堅持“不落一戶、不漏一人”。這是堅持人民生命至上、遵循應收盡收原則的具體舉措。

集中拉網式大排查以社區為基礎，徹底排查清“四類人員”（即確診患者、疑似患者、無法排除感染可能的發熱患者、確診患者的密切接觸者），推動落實“五個百分之百”工作目標（即確診患者百分之百應收盡收、疑似患者百分之百核酸檢測、發熱病人百分之百進行檢測、密切接觸者百分之百隔離、小區村莊百分之百實行24小時封閉管理）。

這次大排查運用人工智能技術，大大提高了工作效率，在3天時間內完成3300多個社區、村灣近1000萬人口的清底排查。在此基礎上，通過大數據平臺整合歸并醫院、疾控中心、醫保、公安、民政、通信運營商等相關單位的信息數據，對“四類人員”有針對性地開展核酸檢測、流行病調查，精準快速地鎖定密切接觸者，并在第一時間實施隔離，形成了對傳染源的有效鎖定和有效阻斷。