Transmission, pathogenesis, replication of SARS-CoV-2 (COVID-19)

Transmission, pathogenesis, replication of SARS-CoV-2 (COVID-19)

Modes of transmission of SARS-CoV-2 (COVID-19) There are three modes of transmission of SARS-CoV-2 which include: Droplets transmission Contact transmission Aerosol transmission Figure: Modes of transmission of SARS-CoV-2. Image Source: NCBI Book Droplets transmission occurs when respiratory droplets (as produced when an infected person coughs or sneezes) are ingested or inhaled by individuals in close proximity. Contact transmission occurs when …

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Coronavirus- An Overview


Structure of Coronavirus Coronaviruses fall in the virus family Coronaviridae, order Nidovirales. Coronaviruses are enveloped, 120 to 160 nm particles that contain an unsegmented genome of single-stranded positive-sense RNA (27–32 kb). The large, plus-stranded RNA genome associates with the N protein to form a helical nucleocapsid. The helical nucleocapsid is 9–11 nm in diameter. There are 20 nm long club or …

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