Viruses responsible for the world's worst diseases

                     COVID-19 also known as the New Corona Virus is spreading around the globe.It is a new strain that was discovered in 2019 and has not been previously identified in humans.

                  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, 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.

                       And you might have heard about the Ebola virus recently. Severe viruses, such as Ebola, are the "deadly viruses," which are the 4th level of bio-defense. These types of viruses are usually fatal to a human being. Also, no vaccines have been made against them. A number of such viruses are reported worldwide. These are the diseases.

-Ebola virus disease

Ebola is a familiar name that you have come across in the past. The Ebola virus was first reported in 1976 along the Ebola River in Congo, Africa. As a result, the disease became known as Ebola virus (EBOV). This is also known as Ebola haemorrhagic fever. As mentioned earlier, this is often a disease that causes death. The disease can spread from person to person through the blood or secretions of an infected patient. The virus begins to show itself within 2-21 days after being ingested. Fever, headache, joint and muscle pain, vomiting and abdominal pain are the main symptoms. These symptoms are also difficult to diagnose at first, as they can also cause infection in many other viral diseases. The kidneys and liver then become dysfunctional, and in some cases internal and external bleeding.

-Marburg virus disease

We are not so familiar, but Marburg is a very serious viral disease. The first known reports of this deadly virus were reported in 1967. It is thought that bats can infect humans. And there are several reasons why it can be transmitted from man to man. It can be transmitted through the blood, secretions, and tissues of a person infected with the virus. The virus is highly transmissible during sexual activity. Symptoms usually show 2 to 21 days after the infection, with fever, headache, diarrhea and vomiting. By about the 5th day, blood vessels and gums can begin to bleed.

-Orthohantavirus disease

The virus was first identified in the United States in 1993. It was infected with the urine, feces and saliva of the manufacturers. Since the incidence of this infection is low, there is no accurate estimate of how long the virus is present in the body. However, according to the data, the virus is exposed to the initial symptoms within 1-8 weeks. These include fever, fever, and muscle pain. Symptoms include headache and vomiting. This directly affects the lungs and respiratory system, causing coughing and shortness of breath 10 days after the virus is injected. No human-to-human cases have been reported.

-Lassa virus disease

This is a virus that spreads from vectors. The virus spreads directly to humans through bodily fluids. The virus causes an estimated 5,000 deaths annually in West Africa. Most of them are from Liberia and Sierra Leone. After the onset of the disease, fever, weakness, headache, vomiting, sore throat, chest tightness, diarrhea, coughing, and severe conditions may include swelling of the face, fluid accumulation in the thoracic cavity, bleeding from the mouth, nose, vagina, or anus. 13% of those who overcome the disease get permanent deafness.

-Rabies

These names are familiar to us. This may enter our body after a mammal's scratching or biting. The rabies virus is caused by the rabies virus. Treating it immediately after a bite or scratch can help prevent the infection. In the United States, there were only 23 reported cases of the virus between 2008 and 2017. But this is still increasing in rural areas of Southeast Asia and Africa. 95% of them are caused by dogs. Symptoms include neurological problems and fear of water and light. If this is not treated properly, death is certain.