Many studies have shown that re-positive tests for SARS-CoV-2 by RT-PCR in recovered
COVID-19 patients are very common. We aim to conduct this review to summarize the …

The scientific community has been alarmed by the possible immunological evasion, higher
infectivity, and severity of disease caused by the newest variants of SARS-CoV-2. The spike …

The coronavirus first appeared in China in 2019, and the World Health Organization (WHO)
named it COVID-19. Then WHO announced this illness as a worldwide pandemic in March …

Can a patient diagnosed with severe acute respiratory syndrome coronavirus-2 (SARS-CoV-
2) be infected again? This question is still unsolved. We tried to analyze local and literature …

Up to date, effective antivirals have not been widely available for treating COVID-19. In this
study, we identify a dual-functional cross-linking peptide 8P9R which can inhibit the two …

Asthma is the most frequent chronic condition in childhood and a current concern exists
about asthma in the pediatric population and its risk for severe SARS-CoV-2 infection …

Objective COVID-19 has been introduced by the World Health Organization as a health
emergency worldwide. Up to 9% of the patients with COVID-19 may be readmitted by 2 …

The outbreak of COVID-19 by the end of 2019 has posed serious health threats to humanity
and jeopardized the global economy. However, no effective drugs are available to treat …

Background Previous studies showed that recovered coronavirus disease 2019 (COVID-19)
patients can have a subsequent positive polymerase chain reaction (PCR) test for severe …

As a new infectious disease, COVID-19 is spread through the respiratory tract in most cases.
Its source and pathological mechanism are not clear. The most common clinical feature is …