What is Coronavirus?

Coronaviruses are a group of viruses that cause diseases in mammals and birds. In humans, the viruses cause respiratory infections which are typically mild, including the common cold; however, rarer forms such as SARS, MERS and the novel coronavirus causing the current outbreak can be lethal. In cows and pigs they may cause diarrhea, while in chickens they can cause an upper respiratory disease. There are no vaccines or antiviral drugs that are approved for prevention or treatment.

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Coronaviruses are viruses in the subfamily Orthocoronavirinae in the family Coronaviridae, in the order Nidovirales. Coronaviruses are enveloped viruses with a positive-sense single-stranded RNA genome and with a nucleocapsid of helical symmetry. The genomic size of coronaviruses ranges from approximately 26 to 32 kilobases, the largest for an RNA virus.

The name “coronavirus” is derived from the Latin corona, meaning crown or halo, which refers to the characteristic appearance of the virus particles (virions): they have a fringe reminiscent of a royal crown or of the solar corona.

” The Centers for Disease Control and Prevention (CDC) is closely monitoring an outbreak of respiratory illness caused by a novel coronavirus first identified in Wuhan, Hubei Province, China. Chinese authorities identified the new coronavirus, which has resulted in thousands of confirmed cases in China, including cases outside Wuhan City. Additional cases have been identified in a growing number of other international locations, including the United States. There are ongoing investigations to learn more. “

Types of Human Coronaviruses

Human coronaviruses are common throughout the world. Seven different coronaviruses, that scientists know of, can infect people and make them sick. Some human coronaviruses were identified many years ago and some have been identified recently. Human coronaviruses commonly cause mild to moderate illness in people worldwide. Two newer human coronaviruses, MERS-CoV and SARS-CoV, have been known to frequently cause severe illness.

Where Do Coronaviruses Come From?

Coronaviruses are common in many different species of animals, including camels and bats. Rarely, these coronaviruses can evolve and infect humans and then spread between humans. Recent examples of this include SARS-CoV and MERS-CoV.

Most coronaviruses infect animals, but not people. In the future, one or more of these other coronaviruses could potentially evolve and spread to humans, as has happened in the past. We still don’t understand why only certain coronaviruses are able to infect people.

Doctors on ‘Chernobyl-like suicide mission’ to virus epicentre

Distraught relatives have farewelled medical volunteers headed for Wuhan’s coronavirus ground zero on what has been likened to a “Chernobyl” like “suicide mission”.

Footage has emerged of relatives tearfully saying goodbye to doctors and nurses on a mission which has been compared with Soviet first responders heading into the Chernobyl nuclear reactor after it exploded.

The 1986 Chernobyl disaster was the world’s worst nuclear accident.

The volunteers to Wuhan’s frontline to treat coronavirus-infected patients has been described as a “coronavirus suicide mission”.

American politician Solomon Yue issued a sombre tweet in response to one video of families sobbing and hugging as their medically trained relatives board trains or buses.

“Like Chernobyl firefighters, some of those doctors and nurses WON’T come back to their loved ones,” Mr Yue posted on Twitter.

“This is a #coronarvirus suicide mission for many of them. God bless them.”

Thousands of doctors and nurses are saying goodbye to their families as they’re deployed to Wuhan to fight the coronavirus outbreak.

In Xian, in central China, one doctor was filmed by China Central Television having a “last breakfast” with his wife before heading to the frontline in Wuhan.

First Affiliated Hospital of Xian Jiaotong University chief physicist Dr Liu Yu, at the is one of 137 medical staff assigned from Shaanxi province alone to the virus epicentre.

About MERS

Middle East Respiratory Syndrome (MERS) is an illness caused by a virus (more specifically, a coronavirus) called Middle East Respiratory Syndrome Coronavirus (MERS-CoV). Most MERS patients developed severe respiratory illness with symptoms of fever, cough and shortness of breath. About 3 or 4 out of every 10 patients reported with MERS have died.

All cases are linked to the Arabian Peninsula
Health officials first reported the disease in Saudi Arabia in September 2012. Through retrospective (backward-looking) investigations, they later identified that the first known cases of MERS occurred in Jordan in April 2012. So far, all cases of MERS have been linked through travel to, or residence in, countries in and near the Arabian Peninsula. The largest known outbreak of MERS outside the Arabian Peninsula occurred in the Republic of Korea in 2015. The outbreak was associated with a traveler returning from the Arabian Peninsula.

People with MERS can spread it to others
MERS-CoV has spread from ill people to others through close contact, such as caring for or living with an infected person.

MERS can affect anyone. MERS patients have ranged in age from younger than 1 to 99 years old.

CDC continues to closely monitor the MERS situation globally. We are working with partners to better understand the risks of this virus, including the source, how it spreads, and how to prevent infections. CDC recognizes the potential for MERS-CoV to spread further and cause more cases globally and in the U.S. We have provided information for travelers and are working with health departments, hospitals, and other partners to prepare for this.