Journal
EURASIAN JOURNAL OF MEDICINE
Volume 54, Issue 3, Pages 299-304Publisher
AVES
DOI: 10.5152/eurasianjmed.2022.21133
Keywords
COVID-19; histology; pneumonia; SARS-CoV2; severe acute respiratory syndrome; virology
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Funding
- Science & Engineering Research Board (SERB) [EMR/2017/000973]
- Department of Science & Technology, Government of India
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This review discusses the characteristics of the causative agent of COVID-19, its transmission, and pathological findings. SARS-CoV-2 is a variant of SARS-CoV and MERS-CoV, with higher confirmed cases and death toll. Current treatment is based on symptoms similar to SARS-CoV, and further research is needed to understand the disease through in vivo and ex vivo studies.
The pandemic coronavirus disease 2019 outbreak's causative agent was identified as severe acute respiratory syndrome coronavirus 2. It is a positive-sense single-stranded RNA virus with a similar to 30 kb size genome that belongs to the Nidovirales. Molecular analysis revealed that severe acute respiratory syndrome coronavirus 2 is a variant of severe acute respiratory syndrome coronavirus and Middle East respiratory syndrome coronavirus with some sequence similarity. The confirmed cases and death toll are high in severe acute respiratory syndrome coronavirus 2 compared to severe acute respiratory syndrome coronavirus and the estimated R-0 is >1. The data on pathological findings on severe acute respiratory syndrome coronavirus 2 are scarce and present treatment management is based on symptoms that are similar to severe acute respiratory syndrome coronavirus. In this review, we have discussed the transmission, viral replication, and cytokine storm and highlighted the recent pathological findings of coronavirus disease 2019. The reported severe acute respiratory syndrome coronavirus 2 pathological findings were similar to that of severe acute respiratory syndrome coronavirus. Though these findings help notify the clinical course of the disease, it warrants further in vivo and ex vivo studies with larger samples obtained from the coronavirus disease 2019 patients.
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