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Do you know what CORONAVIRUS is? Its types?

Emerging new diseases are frequently zoonoses i.e. is an infectious disease caused by a pathogen (an infectious agent, such as a bacterium, virus, parasite or prion) that has jumped from an animal (usually a vertebrate) to a human. These viruses mostly infect the upper respiratory system of the mammals including humans. Infectious bronchitis virus (IBV) was the first coronavirus to be isolated from domestic fowls in the late 1930s.  But, this virus has not been reported to cause any human clinical disease. These avian coronaviruses have been found in nondomestic avian species like peafowl, pheasant, teal, turkey, penguins, pigeon, duck, and Amazon parrot.
Further, the coronavirus types causing minor infection in humans were 229E, NL63, OC43, and HKU1, reported earlier. Rarely these coronaviruses may precipitate pneumonia or bronchitis in the human host. Two species HCoV-229E and subsequently HCoV-OC43 were found to cause severe lower respiratory tract infection in immune-compromised patients and elderly patients.

1) In 2004 Holland another novel human coronavirus (HCoV-NL63) was reported from infant (7 months) suffering from respiratory symptoms. This virus also infected other children and the immune-compromised, exhibiting mild upper respiratory symptoms along with rhinorrhoea along with bronchiolitis and croup.  
2) A positive novel human coronavirus (HCoV-OC43) respiratory specimens were reported in a pediatric hospital in Montreal (2010). HCoV-OC43 is a member of the species Betacoronavirus-1 found to infect humans and cattle showing both upper and lower respiratory tract infections along with cold-like symptoms.  
3) In 2005, a novel coronavirus HCoV-HKU1, was reported in patients of Hong Kong showing pneumonitis. Thus, Coronavirus is a group of related viruses that cause diseases in mammals and birds. Coronavirus investigators found that severe acute respiratory syndrome infected infants and old age persons. New advances in the medical sciences of coronaviruses have developed a greater understanding of the trans-species infection, and pathogenesis of new diseases.
4) The newly emerged zoonotic coronavirus: severe acute respiratory syndrome (SARS-CoV) was declared as a pandemic outbreak (SARS) in 2002–2003 caused by order Nidovirales, Coronavirus. Similarly, other coronaviruses have spread from different host species from time to time causing emerging diseases.
The first human cases of SARS were reported to be caused by coronaviruses, from the source of masked palm civets and raccoon dogs which acted as an intermediate source of infection. Many survey studies reported a wide variety of sources of coronaviruses from a bat species in Asian countries. Horseshoe-nosed bats found in different locations of China and Hong Kong were found as a source of SARS-like CoVs in which these bats had found to develop their natural antibodies to tackle these coronaviruses. SARS was the first reported as a pandemic in 2003, where 8,097 cases were found with 774 deaths around 30 countries globally.
The incubation period of SARS reported is 2 to 14 days. Few cases showed longer incubation periods for more than 14 days. Symptoms reported are the same as that of regular influenza virus, where the patients first fall ill within 2 days and become eligible to transmit the infection from symptomatic SARS after the fifth day of onset of disease with higher viral load in nasopharyngeal droplets.
5) Middle East respiratory syndrome coronavirus (MERS-CoV) was first reported in 2012. The MERS-CoV is a novel coronavirus that was earlier designated as HCoV-EMC. Similarly, MERS-CoV also found to causes mild to fulminant respiratory tract infection. The clinical manifestation found in the case of MERS-CoV is similar to SARS. Bats are considered as the major suspects in terms of zoonotic infection of both MERS-CoV and SARS. MERS-CoV is a genetically the single-stranded RNA virus belonging to the family Coronaviridae same as that of other coronavirus reported.
Types of Corona-virus

Monkeys, raccoon dogs, Himalayan palm civets, dogs, cats, and rodents are found susceptible to MERS-CoV. It was stated that this virus transmitted in bats from camels. From camels, it was transmitted to humans, but the reason is unclear.
So don't fear to Corona; work in the direction to increase your immunity
we can win this war

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