Opinion Review
Copyright ©The Author(s) 2021. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Clin Cases. Jan 6, 2021; 9(1): 1-7
Published online Jan 6, 2021. doi: 10.12998/wjcc.v9.i1.1
Necessary problems in re-emergence of COVID-19
Si Chen, Lin-Zhu Ren, Hong-Sheng Ouyang, Shen Liu, Li-Ying Zhang
Si Chen, Lin-Zhu Ren, Hong-Sheng Ouyang, Li-Ying Zhang, College of Animal Sciences, Jilin University, Changchun 130062, Jilin Province, China
Shen Liu, Department of Pharmacy, Jilin Cancer Hospital, Changchun 130000, Jilin Province, China
Author contributions: Ren LZ and Liu S conceived the idea for the manuscript; Chen S and Zhang LY wrote the manuscript; Zhang LY and Ouyang HS reviewed the literature.
Conflict-of-interest statement: The authors declare no conflict of interest involved.
Open-Access: This article is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution NonCommercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/Licenses/by-nc/4.0/
Corresponding author: Li-Ying Zhang, PhD, Professor, College of Animal Sciences, Jilin University, No. 5333 Xi'an Road, Changchun 130062, Jilin Province, China. zhangliy@jlu.edu.cn
Received: October 14, 2020
Peer-review started: October 14, 2020
First decision: November 3, 2020
Revised: November 5, 2020
Accepted: November 21, 2020
Article in press: November 21, 2020
Published online: January 6, 2021
Processing time: 79 Days and 6.4 Hours
Abstract

The ongoing pandemic of coronavirus disease 2019 poses a great threat to human beings. Although numerous patients have recovered, re-positive cases have been reported in several countries. Till now, we still know very little about the disease and its pathogen severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Therefore, more attention should be paid to the following aspects, such as post-discharge surveillance, asymptomatic infection, re-evaluation of influenza-like symptoms, and dynamic monitoring of genomic mutation of SARS-CoV-2.

Keywords: COVID-19; SARS-CoV-2; Re-positive; Follow-up; Asymptomatic infection

Core Tip: To date, the re-emergence of coronavirus disease 2019 has been reported in several countries or cities. Therefore, more attention should be paid to the following aspects, such as post-discharge surveillance, asymptomatic infection, re-evaluation of influenza-like symptoms, and dynamic monitoring of genomic mutation of severe acute respiratory syndrome coronavirus 2.