RESUMEN

We report the dynamic change process of target genes by RT-PCR testing of SARS-Cov-2 during the course of a COVID-19 patient: from successive negative results to successive single positive nucleocapsid gene, to two positive target genes (orf1ab and nucleocapsid) by RT-PCR testing of SARS-Cov-2, and describe the diagnosis, clinical course, and management of the case. In this case, negative results of RT-PCR testing was not excluded to diagnose a suspected COVID-19 patient, clinical signs and symptoms, other laboratory findings, and chest CT images should be taken into account for the absence of enough positive evidence. This case highlights the importance of successive sampling and testing SARS-Cov-2 by RT-PCR as well as the increased value of single positive target gene from pending to positive in two specimens to diagnose laboratory-confirmed COVID-19.

Asunto(s)

Betacoronavirus/genética , Infecciones por Coronavirus/diagnóstico , Infecciones por Coronavirus/virología , Neumonía Viral/diagnóstico , Neumonía Viral/virología , COVID-19 , China , Infecciones por Coronavirus/fisiopatología , Proteínas de la Nucleocápside de Coronavirus , Progresión de la Enfermedad , Perfilación de la Expresión Génica , Regulación Viral de la Expresión Génica , Humanos , Masculino , Persona de Mediana Edad , Proteínas de la Nucleocápside/genética , Pandemias , Fosfoproteínas , Neumonía Viral/fisiopatología , Poliproteínas , Reacción en Cadena de la Polimerasa de Transcriptasa Inversa , SARS-CoV-2 , Proteínas Virales/genética