How does corona virus attack human cells?

The strain that causes Covid-19 disease is spreading worldwide. There are at least 6 strains of this virus that infect humans , some of which cause the common cold and two that have caused the disease: SARS (Severe Acute Respiratory Syndrome) and MERS (Respiratory Syndrome). Middle East).

Gai covered with outside

The corona virus is named after its shape. Latin corona is the crown. Virus outer shell has many spikes like a crown, Virus is covered in fat molecules (lipids), easy to decay when exposed to soap.

Invasive cell damage

The virus enters the body through the nose, mouth or eyes, then attaches to cells that make a protein called ACE2 (angiotensin-converting enzyme, a protein that causes blood vessel constriction and hypertension). The virus is thought to originate from bats, binding to a similar protein in the body of this species.

Release the viral RNA

The virus infects cells by fusing the lipid envelope with cell membranes. Once done, the corona virus releases part of its genetic material, RNA, into the cell.

Occupy cell control

The virus's genetic sequence, when decoded, is less than 30,000 characters (human genes are longer than 3 billion). The infected cell reads the virus's RNA, then begins to make a protein that makes the immune system inaccessible and helps create new copies of the virus.

Antibiotics kill bacteria, not viruses. Researchers are testing antiviral drugs that break down viral proteins and stop infection in the body.

Creating viral proteins

As the infection progresses, the intracellular apparatus begins to create new spikes for viruses and proteins that help to make more copies of the corona virus.

Assemble the copy

Clones of the virus are collected and transferred to the outer shell of the cell.

Spread of infection

Each infected cell can release millions of copies of the virus before the cell stops working and dies. The virus will then attack nearby cells, or lie in water droplets from the lungs to the environment.

Immune reflex

Most Covid-19 infections cause fever because the immune system tries to destroy the virus. In severe cases, the immune system may overreact and start attacking cells in the lungs. The organ is clogged with dead fluids and cells, causing shortness of breath. A small number of infections can lead to severe acute respiratory syndrome, even death.

Leaving the body

Coughing and sneezing can release tiny droplets of virus carriers, dropping them on other people's surfaces or bodies. In the external environment, the virus is still able to spread from a few hours to a few days, depending on the conditions and objects.

Infected people can avoid spreading the virus by wearing a mask. However, the virus has an average incubation period of 14 days or longer, with mild or no symptoms, so mild cases are difficult to detect despite the high risk of infection.

Vaccine prospects

Future vaccines may help the body make antibodies to kill the SARS-CoV-2 virus and prevent it from invading human cells. The flu vaccine works the same way, but the antibody produced by the flu vaccine does not protect against corona virus.

The best way to avoid getting coronavirus and other viruses is to wash your hands often with soap, avoid touching your face, keep a distance from the sick, and clean surfaces that come in contact with them frequently.

What is corona virus?

It is a new virus named because the crown-like spikes protrude from its surface.

The corona virus can infect both animals and humans and can cause a range of respiratory illnesses from the common cold to more serious conditions like Severe Acute Respiratory Syndrome (SARS).

WHO on 11 March declared Covid-19 a global pandemic.

Mechanism of virus attack with human cells?

The corona virus enters the body through the nose, mouth or eyes, then invades the cell, releases RNA and is cloned by the intracellular machinery until the cell stops working.

How to worry?

New outbreaks in Asia, Europe and the Middle East continue to raise concerns about the global pandemic. The Centers for Disease Control and Prevention (CDC) have warned that Americans should be prepared for the possibility that the virus will spread to the country.

How to keep yourself and others safe?

Washing your hands often is the most important thing you can do, along with staying home if you're sick.

What if I travel?

CDC warns that older and at-risk travelers should avoid Japan, Italy and Iran.

The agency has also recommended against all unnecessary travel to South Korea and China.

How to prepare if the disease is spread?

Keep essential medicine for 30 days. Get a flu shot.

Prepare essential household appliances and support systems in place for elderly family members.

Where has the virus spread?

The virus originated in Wuhan, China, has infected 120,000 people in at least 110 countries and territories.

How is the virus contagious?

According to preliminary research, it appears to be moderately contagious, similar to SARS, and may be transmitted through sneezing, coughing and contaminated surfaces.

Scientists estimate that each infected person could infect about 1.5-3.5 people without effective preventive measures.

Who is working to stop the virus?

World Health Organization officials have been working with officials in China, where disease development is slowing.

But this week, as confirmed cases skyrocketed on two continents, experts warned that the world was not ready for a major pandemic.

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