SARS coronavirus 2: from genome to infectome

Area of Science:

• Virology
• Infectious Diseases
• Public Health

Background:

• Severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), a Betacoronavirus, is closely related to SARS-CoV-1.
• The virus likely originated in bats or pangolins and was first identified in Wuhan, China, in December 2019.
• SARS-CoV-2 is the causative agent of COVID-19, a disease with a range of severity from mild to critical.

Purpose of the Study:

• To summarize the key characteristics of SARS-CoV-2 and COVID-19.
• To highlight the transmission dynamics and global impact of the pandemic.
• To identify populations at higher risk for severe disease.

Main Methods:

• Literature review and synthesis of available data on SARS-CoV-2.
• Analysis of epidemiological data regarding case numbers and mortality.
• Review of clinical manifestations and pathophysiology of COVID-19.

Main Results:

• SARS-CoV-2 spreads efficiently through human-to-human transmission via droplets.
• Globally, over 53.9 million cases and 1.31 million deaths were reported.
• Individuals over 60, those with comorbidities, and immunocompromised individuals face increased susceptibility.

Conclusions:

• SARS-CoV-2 targets the respiratory tract, potentially disseminating to other organs.
• The virus disrupts immune signaling, leading to cytokine storms, ARDS, and multi-organ failure.
• Understanding SARS-CoV-2 transmission and risk factors is crucial for public health interventions.