Symptoms of coronavirus
COVID-19 affects different people in different ways. Infected people have had a wide range of symptoms reported – from mild symptoms to severe illness.
Symptoms may appear 2-14 days after exposure to the virus. People with these symptoms may have COVID-19:
Fever or chills
Shortness of breath or difficulty breathing
Muscle or body aches
New loss of taste or smell
Congestion or runny nose
Nausea or vomiting
Look for emergency warning signs for COVID-19. If someone is showing any of these signs, seek emergency medical care immediately:
Persistent pain or pressure in the chest
Inability to wake or stay awake
Bluish lips or face
Call your medical provider for any other symptoms that are severe or concerning to you.
Coronavirus prevention measures
The best way to prevent illness is to avoid being exposed to this virus. Learn how COVID-19 spreads and practice these actions to help prevent the spread of this illness.
To help prevent the spread of COVID-19, everyone should:
Clean your hands often, either with soap and water for 20 seconds or a hand sanitizer that contains at least 60% alcohol.
Avoid close contact with people who are sick.
Put distance between yourself and other people (at least 6 feet).
Cover your mouth and nose with a mask when around others.
Cover your cough or sneeze with a tissue, then throw the tissue in the trash.
Clean and disinfect frequently touched objects and surfaces daily.
CDC recommends that people wear masks in public settings and when around people outside of their household, especially when other social distancing measures are difficult to maintain.
Masks may help prevent people who have COVID-19 from spreading the virus to others.
Medical face masks are made to fit over the mouth and the nose of the wearer. They are made from materials that won’t cause any discomfort to the person wearing them. There are a number of brands that offer different styles. A few include a liner, which is an absorbent substance for the mouth and nose. These are designed to be comfier than other varieties that just fit the snugly over. Always check whether the fabric is breathable when purchasing a face mask. This is important so that the wearer could breathe while being exploited.
Black Medical masks are a tool that can be used to prevent the spread of respiratory infection.
Black Medical masks are a type of personal protective equipment used to prevent the spread of respiratory infections. These Black Medical masks cover the mouth and nose of the wearer and, if worn properly, may be effective at helping prevent transmission of respiratory viruses and bacteria.
There are 2 main types of masks used to prevent respiratory infection: surgical masks, sometimes referred to as face masks, and respirators. These Black Medical masks differ by the type and size of infectious particles they are able to filter. Face masks are used more commonly for respiratory viruses that spread via droplets, which travel short distances and are transmitted by cough or sneeze. Black Medical mask often fits loosely and prevents the wearer from spreading large sprays and droplets, as well as preventing hand-to-face contact. N95 respirators block 95% of airborne particles. They are tight-fitting and prevent inhalation of smaller infectious particles that can spread through the air over long distances after an infected person coughs or sneezes. Diseases that require the use of an N95 respirator include tuberculosis, chickenpox, and measles. N95 respirators cannot be used by individuals with facial hair or by children because it is difficult to achieve a proper fit. In those cases, a special respirator called a powered air-purifying respirator may be used instead.
The US Center for Disease Control (CDC) cites the N95 respirator standard as part of the advised protective equipment in their Covid-19 FAQ and their SARS guidance (SARS being a similar type of Corona virus). Which suggests that an N95 or better respirator is acceptable.
N95 vs FFP3 & FFP2
The most commonly discussed respirator type is N95. This is an American standard managed by NIOSH – part of the Center for Disease Control (CDC).
Europe uses two different standards. The “filtering face piece” score (FFP) comes from EN standard 149:2001. Then EN 143 standard covers P1/P2/P3 ratings. Both standards are maintained by CEN (European Committee for Standardization).
Medical masks are more commonly known as surgical masks. They’re mainly used by health care professionals to protect themselves and others from the spread of airborne infectious diseases, bodily fluids, and particulate matter. During a bad disease, outbreak health departments may also recommend that members of the public wear surgical masks to protect themselves. These masks are generally designed to be somewhat loose-fitting while being able to completely cover both your mouth and nose.
Respirators vs surgical masks
By covering the mouth and the nose with the mask, an excellent one can defend you from getting infected with this illness. You are most likely to be protected from this infection if you have a mask on when you’re in a hospital or a health care facility. However, if you get near a man who is infected or leave the room, the virus can pass through. That is why when you are around those who are infected with this disease you have to use a health mask. They should be as long as possible, although they aren’t assumed to be disposable.
An N95 face mask is one of those remedies which are available for treating diseases. It’s a protective apparatus that is facial that is disease-fighting. The breathing apparatus of the face mask should be used only when the problem is critical, and it’s recommended that the use of this face mask has to be performed every two to three hours, starting. Bear in mind that if your temperature begins to grow, it may lead to serious complications.
Where does the virus come from?
Are YOU using your face mask correctly during coronavirus outbreak? USA top expert shows how to take off the protective cover to avoid getting infected in the process
US top coronavirus expert has taught the public how to take off their face masks correctly to avoid catching the deadly coronavirus in the process.
Dr. Zhong Nanshan, who helped the country tackle the SARS epidemic in 2003, urged residents to always remove the protective covers by the strings around their ears.
He warned people not to grab the front part of the masks with their hands and pull them off.
'The front part [of the mask] may already be contaminated,
According to scientists, the virus has almost certainly come from bats. Coronaviruses in general tend to originate in animals – the similar SARS and MERS viruses are believed to have originated in civet cats and camels, respectively.
The first cases of COVID-19 came from people visiting or working in a live animal market in the city, which has since been closed down for investigation.
Although the market is officially a seafood market, other dead and living animals were being sold there, including wolf cubs, salamanders, snakes, peacocks, porcupines and camel meat.
A study by the Wuhan Institute of Virology, published in February 2020 in the scientific journal Nature, found that the genetic make-up virus samples found in patients in China is 96 per cent similar to a coronavirus they found in bats.
However, there were not many bats at the market so scientists say it was likely there was an animal which acted as a middle-man, contracting it from a bat before then transmitting it to a human. It has not yet been confirmed what type of animal this was.
Dr Michael Skinner, a virologist at Imperial College London, was not involved with the research but said: 'The discovery definitely places the origin of nCoV in bats in China.
'We still do not know whether another species served as an intermediate host to amplify the virus, and possibly even to bring it to the market, nor what species that host might have been.'
So far the fatalities are quite low. Why are health experts so worried about it?
Experts say the international community is concerned about the virus because so little is known about it and it appears to be spreading quickly.
It is similar to SARS, which infected 8,000 people and killed nearly 800 in an outbreak in Asia in 2003, in that it is a type of coronavirus which infects humans' lungs.
Another reason for concern is that nobody has any immunity to the virus because they've never encountered it before. This means it may be able to cause more damage than viruses we come across often, like the flu or common cold.
Speaking at a briefing in January, Oxford University professor, Dr Peter Horby, said: 'Novel viruses can spread much faster through the population than viruses which circulate all the time because we have no immunity to them.
'Most seasonal flu viruses have a case fatality rate of less than one in 1,000 people. Here we're talking about a virus where we don't understand fully the severity spectrum but it's possible the case fatality rate could be as high as two per cent.'
If the death rate is truly two per cent, that means two out of every 100 patients who get it will die.
'My feeling is it's lower,' Dr Horby added. 'We're probably missing this iceberg of milder cases. But that's the current circumstance we're in.
'Two per cent case fatality rate is comparable to the Spanish Flu pandemic in 1918 so it is a significant concern globally.'
How does the virus spread?
The illness can spread between people just through coughs and sneezes, making it an extremely contagious infection. And it may also spread even before someone has symptoms.
It is believed to travel in the saliva and even through water in the eyes, therefore close contact, kissing, and sharing cutlery or utensils are all risky.
Originally, people were thought to be catching it from a live animal market in Wuhan city. But cases soon began to emerge in people who had never been there, which forced medics to realise it was spreading from person to person.
There is now evidence that it can spread third hand – to someone from a person who caught it from another person.
What does the virus do to you? What are the symptoms?
Once someone has caught the COVID-19 virus it may take between two and 14 days, or even longer, for them to show any symptoms – but they may still be contagious during this time.
If and when they do become ill, typical signs include a runny nose, a cough, sore throat and a fever (high temperature). The vast majority of patients – at least 97 per cent, based on available data – will recover from these without any issues or medical help.
In a small group of patients, who seem mainly to be the elderly or those with long-term illnesses, it can lead to pneumonia. Pneumonia is an infection in which the insides of the lungs swell up and fill with fluid. It makes it increasingly difficult to breathe and, if left untreated, can be fatal and suffocate people.
What have genetic tests revealed about the virus?
Scientists in China have recorded the genetic sequences of around 19 strains of the virus and released them to experts working around the world.
This allows others to study them, develop tests and potentially look into treating the illness they cause.
Examinations have revealed the coronavirus did not change much – changing is known as mutating – much during the early stages of its spread.
However, the director-general of China's Center for Disease Control and Prevention, Gao Fu, said the virus was mutating and adapting as it spread through people.
This means efforts to study the virus and to potentially control it may be made extra difficult because the virus might look different every time scientists analyse it.
More study may be able to reveal whether the virus first infected a small number of people then change and spread from them, or whether there were various versions of the virus coming from animals which have developed separately.
How dangerous is the virus?
The virus has a death rate of around two per cent. This is a similar death rate to the Spanish Flu outbreak which, in 1918, went on to kill around 50million people.
However, experts say the true number of patients is likely considerably higher and therefore the death rate considerably lower. Imperial College London researchers estimate that there were 4,000 (up to 9,700) cases in Wuhan city alone up to January 18 – officially there were only 444 there to that date. If cases are in fact 100 times more common than the official figures, the virus may be far less dangerous than currently believed, but also far more widespread.
Experts say it is likely only the most seriously ill patients are seeking help and are therefore recorded – the vast majority will have only mild, cold-like symptoms. For those whose conditions do become more severe, there is a risk of developing pneumonia which can destroy the lungs and kill you.