essay on caronavirus
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Explanation:
What Is COVID-19?
A coronavirus is a kind of common virus that causes an infection in your nose, sinuses, or upper throat. Most coronaviruses aren't dangerous.
In early 2020, after a December 2019 outbreak in China, the World Health Organization identified SARS-CoV-2 as a new type of coronavirus. The outbreak quickly spread around the world.
COVID-19 is a disease caused by SARS-CoV-2 that can trigger what doctors call a respiratory tract infection. It can affect your upper respiratory tract (sinuses, nose, and throat) or lower respiratory tract (windpipe and lungs).
It spreads the same way other coronaviruses do, mainly through person-to-person contact. Infections range from mild to deadly.
SARS-CoV-2 is one of seven types of coronavirus, including the ones that cause severe diseases like Middle East respiratory syndrome (MERS) and sudden acute respiratory syndrome (SARS). The other coronaviruses cause most of the colds that affect us during the year but aren’t a serious threat for otherwise healthy people.
Is there more than one strain of SARS-CoV-2?
It’s normal for a virus to change, or mutate, as it infects people. A Chinese study of 103 COVID-19 cases suggests the virus that causes it has done just that. They found two strains, which they named L and S. The S type is older, but the L type was more common in early stages of the outbreak. They think one may cause more cases of the disease than the other, but they’re still working on what it all means.
How long will the coronavirus last?
It’s too soon to tell how long the pandemic will continue. It depends on many things, including researchers’ work to learn more about the virus, their search for a treatment and a vaccine, and the public’s efforts to slow the spread.
More than 100 vaccine candidates are in various stages of development and testing. This process usually takes years. Researchers are speeding it up as much as they can, but it still might take 12 to 18 months to find a vaccine that works and is safe.
Symptoms of COVID-19
The main symptoms include:
Fever
Coughing
Shortness of breath
Trouble breathing
Fatigue
Chills, sometimes with shaking
Body aches
Headache
Sore throat
Loss of smell or taste
Nausea
Diarrhea
The virus can lead to pneumonia, respiratory failure, septic shock, and death. Many COVID-19 complications may be caused by a condition known as cytokine release syndrome or a cytokine storm. This is when an infection triggers your immune system to flood your bloodstream with inflammatory proteins called cytokines. They can kill tissue and damage your organs.
If you notice the following severe symptoms in yourself or a loved one, get medical help right away:
Trouble breathing or shortness of breath
Ongoing chest pain or pressure
New confusion
Can’t wake up fully
Bluish lips or face
Strokes have also been reported in some people who have COVID-19. Remember FAST:
Face. Is one side of the person’s face numb or drooping? Is their smile lopsided?
Arms. Is one arm weak or numb? If they try to raise both arms, does one arm sag?
Speech. Can they speak clearly? Ask them to repeat a sentence.
Time. Every minute counts when someone shows signs of a stroke. Call 911 right away.
If you’re infected, symptoms can show up in as few as 2 days or as many as 14. It varies from person to person.
According to researchers in China, these were the most common symptoms among people who had COVID-19:
Fever 99%
Fatigue 70%
Cough 59%
Lack of appetite 40%
Body aches 35%
Shortness of breath 31%
Mucus/phlegm 27%
Some people who are hospitalized for COVID-19 have also have dangerous blood clots, including in their legs, lungs, and arteries.
Social distancing or physical distancing, keeping space between yourself and other people when you have to go out
Quarantine, keeping someone home and separated from other people if they might have been exposed to the virus
Isolation, keeping sick people away from healthy people, including using a separate “sick” bedroom and bathroom when possible
Coronavirus Vaccine
There’s no vaccine, but intense research to create one has been underway around the world since scientists shared the virus’ genetic makeup in January 2020. Vaccine testing in humans started with record speed in March 2020. More than 100 vaccine projects are in various phases of development.
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China alerted the WHO to cases of unusual pneumonia in Wuhan on December 31.
COVID-19 is thought to have originated in a seafood market where wildlife was sold illegally.
On February 7, Chinese researchers said the virus could have spread from an infected animal to humans through illegally trafficked pangolins, prized in Asia for food and medicine.
Scientists have pointed to either bats or snakes as possible sources.
Coronaviruses are zoonotic, meaning they are transmitted between animals and people. Detailed investigations found that SARS-CoV was transmitted from civet cats to humans and MERS-CoV from dromedary camels to humans. Several known coronaviruses are circulating in animals that have not yet infected humans.
Common signs of infection include respiratory symptoms, fever, cough, shortness of breath, and breathing difficulties. In more severe cases, the infection can cause pneumonia, severe acute respiratory syndrome, kidney failure, and even death.
Standard recommendations to prevent infection spread include regular hand washing, covering mouth and nose when coughing and sneezing, thoroughly cooking meat and eggs. Avoid close contact with anyone showing symptoms of respiratory illness such as coughing and sneezing.