What are the known coronaviruses that can infect people?
Human coronaviruses are capable of causing illnesses ranging from the common cold to more severe diseases such as Middle East respiratory syndrome (MERS, fatality rate ~34%). SARS-CoV-2 is the seventh known coronavirus to infect people, after 229E, NL63, OC43, HKU1, MERS-CoV, and the original SARS-CoV.
How long have coronaviruses existed?
The most recent common ancestor (MRCA) of all coronaviruses is estimated to have existed as recently as 8000 BCE, although some models place the common ancestor as far back as 55 million years or more, implying long term coevolution with bat and avian species.
How severe is the coronavirus disease?
Most people infected with the COVID-19 virus will experience mild to moderate respiratory illness and recover without requiring special treatment. Older people, and those with underlying medical problems like cardiovascular disease, diabetes, chronic respiratory disease, and cancer are more likely to develop serious illness.
When was COVID-19 first identified?
On 31 December 2019, WHO was informed of cases of pneumonia of unknown cause in Wuhan City, China. A novel coronavirus was identified as the cause by Chinese authorities on 7 January 2020 and was temporarily named “2019-nCoV”.
What are Coronaviruses?
Coronaviruses (CoV) are a large family of viruses that cause illness ranging from the common cold to more severe diseases such as Middle East Respiratory Syndrome (MERS-CoV) and Severe Acute Respiratory Syndrome (SARS-CoV). A novel coronavirus (nCoV) is a new strain that has not been previously identified in humans.
What are coronavirus diseases?
Coronaviruses are a group of related viruses that cause diseases in mammals and birds. In humans, coronaviruses cause respiratory tract infections that can range from mild to lethal.
Which organs are most affected by COVID-19?
The lungs are the organs most affected by COVID-19 because the virus accesses host cells via the receptor for the enzyme angiotensin-converting enzyme 2 (ACE2), which is most abundant on the surface of type II alveolar cells of the lungs.
In what conditions does COVID-19 survive the longest?
Coronaviruses die very quickly when exposed to the UV light in sunlight. Like other enveloped viruses, SARS-CoV-2 survives longest when the temperature is at room temperature or lower, and when the relative humidity is low (<50%).
What is the origin of COVID-19?
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a novel severe acute respiratory syndrome coronavirus. It was first isolated from three people with pneumonia connected to the cluster of acute respiratory illness cases in Wuhan. All structural features of the novel SARS-CoV-2 virus particle occur in related coronaviruses in nature.
What does COVID-19 stand for?
‘CO’ stands for corona, ‘VI’ for virus, and ‘D’ for disease. Formerly, this disease was referred to as ‘2019 novel coronavirus’ or ‘2019-nCoV.’ The COVID-19 virus is a new virus linked to the same family of viruses as Severe Acute Respiratory Syndrome (SARS) and some types of common cold.
Has the novel coronavirus that causes COVID-19 been previously identified in humans?
Coronaviruses (CoV) are a large family of viruses that cause illness ranging from the common cold to more severe diseases. A novel coronavirus (nCoV) is a new strain that has not been previously identified in humans. The new virus was subsequently named the “COVID-19 virus”.
What are the official names of the virus that causes COVID-19 and the disease it causes?
Official names have been announced for the virus responsible for COVID-19 (previously known as “2019 novel coronavirus”) and the disease it causes. The official names are:Disease coronavirus disease (COVID-19)Virus severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)
What kind of person is a know it all?
Usually, a know-it-all is so sure of their own knowledge that they tend to be condescending to the people around them. After all, they perceive everyone else as lacking in knowledge. When engaging in a conversation with a know-it-all, you are likely to find yourself feeling like you’re being talked down to.
Is there no knower, known and knowing?
If you look at anything, a shoe, teacup, mountain, or cloud, these three elements of knowing must be present together. Without a knower, known, and process of knowing, there is no experience. That is a constant, and yet experience changes constantly.
How to deal with know it alls at work?
Keep your sense of humor. Kerr says know-it-alls can be highly defensive, and at times aggressive; the last thing you want to do is to make them feel backed into a corner. “Although it’s highly tempting to use sarcasm with a know-it-all, this will undoubtedly backfire.
What are the three elements of knower, known and knowing?
At any moment there are three things present in our experience: a knower, the thing known, and the process of knowing. If you look at anything, a shoe, teacup, mountain, or cloud, these three elements of knowing must be present together. Without a knower, known, and process of knowing, there is no experience.