Coronavirus emerged in December 2019, and the world has been dealing with the pandemic ever since. For most people, the disease is mild but it is a contagious disease. So, the question is how does COVID-19 affect the body and how some people are catching the virus.
Where Does COVID-19 Come From?
Like MERS, Ebola, AIDS, and SARS, COVID-19 is also a zoonotic disease. It has jumped from an animal species to a human host. According to reports, it has happened in Wuhan, China in 2019. Scientists strongly believe that bats are the carrier of this virus. The closest relative of SARS-CoV-2 shares 96% of the genome of the bat virus. It might have jumped to pangolins from bats, which is eaten as a delicacy in China. It is how it found its home in the human body.
How Does COVID-19 Get Into Human Cells?
The protein spikes of the virus attach itself to the protein on the human’s cell surface which is known as ACE2. Usually, ACE2 plays a significant role in controlling blood pressure. However, as coronavirus binds itself to the chemical changes which fuse the membranes across the cell and the virus enabling coronavirus’ RNA to get into the cell.
Thereafter, the virus hijacks the protein-making machinery of the host’s cell to change its RNA to new forms of the virus. A single cell can produce thousands of virions in just a matter of hours. It starts to infect the host’s healthy cells.
Certain parts of this coronavirus’s RNA codes for proteins present in the host cell. Three of them are known until now. One prevents the host cell from sending out any signals to the body’s immune system alerting about the attack. Another forces the host cell to distribute the new virions. Another virus’s form keeps the host cells’ innate immunity from reacting to it.
Preventive Measures For Coronavirus
There is no vaccine yet that can prevent this disease. Thus, the best way to prevent illness is to keep yourself from contacting the virus.
The virus spreads from one person to the other. It can spread when people are in close contact with each other through the respiratory droplets of the infected person. The virus can spread when talk, cough, or sneeze. If you are in close range and not taking any preventive measures, the droplets might land in your nose or mouth and be inhaled into the lungs. Recent tests have also shown that COVID-19 can also spread through people who aren’t showing any symptoms.
Some Preventive Measures You Can Do
- Wash your hands as often as you can with soap and water. Do this for at least twenty seconds. Make sure you do this whenever you visit a public place, blow your nose, sneeze, or cough. In case you don’t have access to soap, use a hand sanitizer.
- Maintain your distance with unwell people. You should follow this even it is someone from your home.
- When you go out, maintain social distance with people.
- Cover your nose and mouth with a mask when you are around others.
- Clean and disinfect the surfaces that are touched quite often.
- Cover your sneezes and coughs.
Since it has spread globally, it is time to take certain steps to truncate its transmission.