How is the corona virus detected using RT-PCR(reverse transcriptase polymerase chain reaction)?

Different countries used different protocol for RT-PCR diagnostic testing for SARS CoV-2. Some countries target the N region gene of SARS CoV-2. This is because , among other reasons, it is a highly conserved region in coronaviruses genome and to deliver consistent result. so basically we need to target specific gene and perform RT-PCR test

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How does coronavirus affects human body?

Human body contact either with infected person’s respiratory secretions, through cough or sneeze and physical contact with them. Once virus enter into body its work can begin.Virus goes inside lung reach in alveoli infects pneumocytes II cells. Coronavirus mainly attack on pneumocytes II cells because virus spike glycoprotein binds with specific receptors ACE (angiotensinogen converting enzyme)

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