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types of corona virus

HERE WE ARE GOING TO DISCUSS THE TYPES OF CORORAVIRUS STAGES

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types of corona virus

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  1. TYPES OF HUMAN Types of human coronaviruses

  2. What to study? • For Prelims: Coronaviruses- types, virus types which affect humans, symptoms and recent examples. • For Mains: Impact of certain viruses and the need for better preparedness.

  3. These viruses are named so because of spikes found on their surface that give them the appearance of a crown when looked through an electron microscope. • The first coronavirus was isolated in 1937 and it was the infectious bronchitis virus (IBV) that caused respiratory disease in chickens. • Coronaviruses which affect humans: • While there are hundreds of coronaviruses that cause diseases in animals such as pigs, camels, bats and cats, till date seven different types of coronaviruses have been identified that infect humans.

  4. In the last two decades, more aggressive coronaviruses have emerged that are capable of causing serious illness and even death in humans.  • These include SARS-CoV, MERS and now SARS-CoV-2. • In 1965, scientists DJ Tyrrell and ML Bynoe were the first ones to identify a human coronavirus, which they isolated from the nasal washing of a male child who had symptoms of common cold. • They termed the strain B814 and later in 1968 the term “coronavirus” was accepted. • Seven types that infect humans: Includes Two alpha coronaviruses (229E and NL63) and four beta coronaviruses (OC43, HKU1, MERS and SARS-CoV).

  5. Prelims Link: • Can Coronavirus infect animals? • How are they classified? • Types of Corona affecting humans? • Why are they named so? • Their discovery? • Mains Link: • In the last two decades, more aggressive coronaviruses have emerged that are capable of causing serious illness and even death in humans. Discuss.

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