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What is Coronavirus

Coronaviruses are a family of viruses that were discovered within the 1960s but whose origin remains unknown. Its differing types cause different diseases, from a chilly to a severe respiratory syndrome (a severe sort of pneumonia ).

Much of the coronaviruses aren’t dangerous and may be treated effectively. In fact, most of the people get a coronavirus at a while in their life, usually during their childhood. Although they’re more frequent in autumn or winter, they will be purchased at any time of the year.

The coronavirus owes its name to the looks it presents, since it’s very almost like a crown or a halo. it’s a kind of virus present in both humans and animals.

In recent years, three major epidemic outbreaks caused by coronaviruses are described:

SARS-CoV : The acute and severe respiratory syndrome (SARS, also referred to as SARS and SARS) began in November 2002 in China, affected quite 8,000 people in 37 countries and caused quite 700 deaths. The mortality of SARS-Cov has been estimated at approximately 10%.

MERS-CoV : The coronavirus that causes the center East respiratory syndrome (MERS) was first detected in 2012 in Saudi Arabia quite 2,400 cases of infection are reported until October 2019 in several countries, with quite 800 deaths. Lethality is therefore 35%.

2019nCoV : At the top of December 2019, the primary cases of a replacement outbreak of coronavirus were reported within the city of Wuhan (China). Since then the dripping of latest infected has been continuous, there are several deaths and it’s been confirmed that this coronavirus is transmitted not only from animals to people, but from human to human. It doesn’t seem as serious as SARS or as lethal as MERS.

There are already infected people in various countries, but experts invite caution and believe it’s unlikely to cause epidemic outbreaks in countries like Spain . “In the hypothetical case that somebody infected arrives in Spain with symptoms, it seems that for now the transmission from person to person is restricted ,” says Javier Arranz, spokesman for the Infectious Diseases Group of the Spanish Society of Family and Community Medicine ( Semfyc) .


Coronaviruses are transmitted during a limited way among humans, but so far the origin of those viruses is unknown. In any case, it’s known that certain animals, like bats, act as reservoirs.

As in other viruses that cause pneumonia, when transmitted in humans, infection is typically caused by the respiratory route, through the respiratory droplets that folks produce once they cough, sneeze or speak.

Everything seems to point that new coronavirus, 2019nCoV , also referred to as Wuhan coronavirus, has an animal origin. In fact, the primary cases are associated with a live animal market within the city of Wuhan in China.

As for MERS, camels are likely to be a crucial reservoir for this sort of coronavirus and an animal source of infection in humans, as specified by the planet Health Organization in its descriptive note on the disease . However, the precise role of camels within the transmission of the virus and also the precise route or routes of transmission are unknown.

In origin, the MERS-CoV coronavirus may be a zoonotic virus that’s transmitted from animals to people . As are often seen from the analysis of several of its genomes, it’s believed that the virus originated in bats and was transmitted to camels at some point within the distant past.

It is believed that the SARS coronavirus originated in bats, subsequently jumping to another species of small mammal, like civet, and eventually to humans.


In general, the main symptoms of coronavirus infections are usually:

  • Secretion and runny nose.
  • Cough.
  • Fatigue.
  • Sore throat and headache.
  • Fever.
  • Chills and malaise.
  • Shortness of breath (breathlessness)

In clinical spectrum of this sort of infections varies from the absence of symptoms to mild or acute respiratory symptoms. This typology usually involves cough, fever and breathing difficulties . it’s common to possess pneumonia and, within the case of MERS, gastrointestinal symptoms, especially diarrhea , also can be recorded .

As with the influenza virus , the foremost severe symptoms (and the very best mortality) are recorded in both the elderly and people with immunosuppression or with chronic diseases like diabetes , some sorts of cancer or chronic lung disease. In extreme cases it can cause respiratory failure.


To date, no vaccine or specific treatment is out there to combat coronavirus infection.

Maintaining basic hygiene is that the best thanks to avoid contracting this virus in places where there’s a greater risk of transmission, mainly in areas of the earth where cases are recorded. it’s convenient to scrub your hands frequently and avoid contact with people already infected , especially protecting eyes, nose and mouth. those that could also be in touch with potential affected parties are advised to wear masks and use handkerchiefs to hide their nose and mouth when coughing or sneezing.

When the MERS-Cov emerged, it had been reported that products of animal origin properly processed by cooking or pasteurization don’t pose any risk of infection, but should be handled with care to avoid contamination by contact with raw products. Camel meat and milk may still be consumed after pasteurization, cooking or other heat treatments; However, its raw consumption should be discarded .

These precautions should be followed especially by those that suffer from diabetes, renal failure , chronic pneumopathy or immunosuppression, since they need a better risk of great illness just in case of coronavirus infection.

In human coronaviruses, the severity can vary substantially between one type and another:

Cold coronavirus

This variant of coronavirus corresponds to types 229E and OC43, which cause the common symptoms of a chilly , although within the most severe cases they will also cause pneumonia within the elderly or in neonates.

Severe acute respiratory syndrome (SARS)

It is a significant sort of pneumonia . It causes respiratory distress and fever over 38 degrees. The 2002 outbreak spread throughout the planet , although its frequency has always been greater in East Asia.

Middle East Respiratory Syndrome (MERS-CoV)

It causes serious respiratory problems , additionally to fever, cough and shortness of breath, although initially it are often asymptomatic . in additional severe cases, blood expectoration, diarrhea and vomiting also occur . It had its first outbreak in 2012 and since then many cases are reported within the Middle East , although it’s also reached Europe and therefore the us .

Wuhan coronavirus (2019nCoV)

The new coronavirus detected in late 2019 in China shows a genetic sequence that matches that of SARS by 80%. However, initially it seems less virulent and with a significantly lower mortality.

Coronaviruses also can appear in animals . a number of the foremost frequent are canine and feline coronaviruses.


To determine if the discomfort suffered by a patient comes from an easy cold or from a coronavirus, the doctor can perform a nose and throat culture , or maybe biopsy .

In cases of coronavirus SARS , a chest tomography is typically performed to work out the symptoms of pneumonia, also as other blood clotting tests, a biochemical analysis and a blood count. Antibody tests and SARS virus isolation also are performed.

For cases of coronavirus MERS , an evaluation is typically administered for those that have symptoms and who could also be susceptible to the virus.

The control of the temperature (with thermal cameras and digital thermometers) of individuals arriving at an airport from affected areas has been one among the primary measures that are put in situ to detect possible cases of Wuhan’s coronavirus, because it was made with the previous shoots. Questionnaires also are made to travelers; just in case of suspicion, they’re subjected to evaluation and, where appropriate, transferred to health centers.


There is no vaccine against the human coronavirus that causes a chilly , but milder cases are often overcome by following an equivalent steps as a standard cold. This doesn’t require medical intervention and easily wash your hands frequently, rest and drink many fluids , the symptoms will disappear within a couple of days. Painkillers like ibuprofen or paracetamol also can be taken to alleviate sore throats or fever.

In cases of coronavirus SRAS, MERS CoV and 2019nCoV , hospital admission is typically convenient . Antivirals, high doses of steroids are given to scale back pulmonary inflammation and respiratory support with oxygen; Sometimes you’ll need antibiotics, but as long as there are supervening bacterial infections, that is, superinfection.

In summary, these sorts of respiratory infections are treated with antiviral and supportive measures. The treatment is typically adapted consistent with the severity of the patient, since there are cases during which severe pneumonia occurs, but in others the manifestations are mild.

Other data

Patient survival will depend upon the sort of coronavirus contracted:

The coronavirus cold have very high rates of recovery and affected virtually all get beat the virus within a couple of days.
The coronavirus SARS also exceeded in most cases, but between nine and 12 per cent of cases end in death of the patient. Young patients have more anticipation , as they have a tendency to possess milder symptoms.
The MERS survival rate is a smaller amount high, reaching around 36 percent in mortality, as specified by the planet Health Organization.
It is still early to work out the deathrate of Wuhan coronavirus (2019nCoV), but it seems less than the previous ones.

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