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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Signs and Symptoms of COVID-19 with Risk factors

Signs and Symptoms of COVID-19

Coronavirus disease 2019 (COVID-19) is an infectious respiratory tract infection caused by SARS-CoV-2. The mode of transmission for this disease is through close physical contact and small droplets that develop during coughing, sneezing, and even talking. Even though these droplets might be inhaled during breathing, this disease is not considered air-borne according to WHO. The incubation period, the duration from …

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Structure and Genome of SARS-CoV-2 (COVID-19) with diagram

Structure and Genome of SARS-CoV-2 (COVID-19) with diagram

Coronaviruses (CoVs) are enveloped positive sense, single-stranded RNA viruses that belong to the subfamily Coronavirinae, family Coronavirdiae, order Nidovirales. Four genera of CoVs, namely, Alphacoronavirus (αCoV), Betacoronavirus (βCoV), Deltacoronavirus (δCoV), and Gammacoronavirus (γCoV), are distinguished. This group of viruses is of zoonotic origin with αCoV and βCoV found in bats and rodents while δCoV and γCoV are found in avian …

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