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Human viruses: Diseases they cause

human viruses diseases they cause

Human viruses: Diseases they cause

Scientist have estimated that there are approximately 1031 viruses at any given time. In other words, there are ten million more viruses on Earth than stars in the entire universe.

Most of these viruses are found in oceans, where they attack bacteria and other microbes. The fact that a virus can infect a bacteria might seem strange, however, scientists think that every type of living organism probably hosts at least one virus.

What is a virus?

A virus is defined as an infectious particle that can reproduce by “attacking” the cells it infects. Once the virus has inserted its genetic material into the host cells, it infects them and begins to make many copies of the virus. These copies leave the host cell, destroy it, and go looking for many more cells to repeat this infectious process with, unless they are attacked by our immune system.

what is a virus?

The human body has some natural defense mechanisms against viruses. When a cell detects a viral infection, such cell can initiate RNA (ribonucleic acid) interference, which works by decreasing the influence of the virus’s genetic material in relation to the cell’s usual material. The immune system also gets underway when it identifies a virus by producing antibodies that bind to the virus and make it unable to replicate. The immune system also releases T cells, which work together to kill the virus. Antibiotics have no effect on viruses, although vaccines will provide immunity.

Some viruses do not kill the cells they infect, but instead alter their functions by sometimes turning it into a cancer cell.

Viral Diseases

The flu, colds, chickenpox, measles and coronavirus are some examples of viral diseases.

viral diseases

Coronavirus is a family of viruses that can cause respiratory diseases in humans. However, this family of viruses can circulate between animals including camels, cattle, cats and bats.

The most recently discovered coronavirus is one that causes the disease globally known as COVID-19.

As most viruses, including flu, COVID-19 can spread through respiratory droplets that are released from the nose and mouth when an infected person coughs. When a person coughs, he releases about 3,000 droplets that can land on other people’s clothing, surfaces around them, and some of them may remain in the air.

Given the high risk of contagion of this and other viruses in general, it is always advisable to strengthen our immune system. This can be achieved through a balanced diet, exercise, or supplements to keep us healthy and able to fight against any infection.

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