RESUMEN
Makeshift hospitals have played an important role in responding to the spread of the epidemic caused by the Omicron coronavirus variant, one of the novel coronavirus(SARS-CoV-2) strains with significantly enhanced infectiousness. In order to prevent the patients, healthcare workers and other staff against from infection, Healthcare-associated Infection Management Committee of Chinese Hospital Association organized domestic experts to jointly formulate this consensus according to the comprehensive consideration of national guidelines as well as the actual characteristics and needs of makeshift hospitals. This consensus is mainly applicable for makeshift hospitals where a large number of asymptomatic and mild cases of novel coronavirus disease 2019(COVID-19) are treated. It provides guidance for the managers and staff to implement prevention and control work in line with local conditions in makeshift hospitals based on a perfect organizational structure and efficient working mechanism, the prevention and control work includes training and assessment of infection control knowledge and skills, flowing in and out of the makeshift hospitals for staff and materials, infection monitoring and feedback, implementation of infection prevention and control measures, requirements for infection management in key areas, occupational protection of staff and terminal disinfection, etc. Meanwhile, this consensus particularly emphasizes that the infection prevention and control in makeshift hospitals is a systematic project, which requires not only multi-system and multi-department collaboration, but also uniting in a concrete effort among leaders and staff. In accordance with the national guidelines and evidence-based experiences, it is very important to combine theory with practice for ensuring efficient operation and safety of makeshift hospitals.
RESUMEN
CONTEXT.: Covert severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infections could be seeding new outbreaks. How to identify asymptomatic SARS-CoV-2 infections early has become a global focus. OBJECTIVE.: To explore the roles of immunoglobulin M (IgM) and immunoglobulin G (IgG) antibodies detection, nucleic acid tests, and computed tomography (CT) scanning to identify asymptomatic SARS-CoV-2 infection. DESIGN.: The clinical data of 389 individuals with close contacts, including in general characteristics, SARS-CoV-2 etiology, serum-specific IgM and IgG antibody detection and CT imaging results, were systematically analyzed. RESULTS.: The present study showed that only 89 of 389 individuals with close contacts were positive after the first nucleic acid test, while 300 individuals were still negative after 2 nucleic acid tests. Among the 300 individuals, 75 did not have pneumonia, and the other 225 individuals had pulmonary imaging changes. A total of 143 individuals were eventually diagnosed as having asymptomatic infection through IgM antibody and IgG antibody detection. The sensitivity, specificity, and false-negative rate of IgM and IgG antibody detection were approximately 97.1% (347 of 357), 95.3% (204 of 214), and 4.67% (10 of 214), respectively. It also indicated that during approximately 2 weeks, most individuals were both IgM positive and IgG positive, accounting for 68.57% (72 of 105). During approximately 3 weeks, the proportion of IgM-positive and IgG-positive individuals decreased to 8.57% (9 of 105), and the proportion of IgM-negative and IgG-positive individuals increased to 76.19% (80 of 105). CONCLUSIONS.: There are highlighted prospects of IgM/IgG antibody detection as a preferred method in identifying the individuals with asymptomatic SARS-CoV-2 infection, especially combined with nucleic acid tests and pulmonary CT scanning.