Top 5 Deadliest Viral Diseases in the World
A virus is a submicroscopic infectious agent which replicates only inside the living cells of an organism. The viruses can infect all types of life forms, from plants and animals to microorganisms, including bacteria and archaea.
Virus are made up of a genetic material, such as DNA or RNA, that’s enclosed in a coat of protein. Viruses invade the cells in your body and use components of those cells to help them multiply.
The viral diseases are the illness or health condition which is caused by a virus. All the viral diseases may not be contagious. But most of them are contagious viral diseases which include the flu, the common cold, HIV, and herpes.
Lets us see the top 5 deadliest viral diseases in the world.
Ebola virus outbreaks identified in humans in the Republic of the Sudan and the Democratic Republic of Congo in 1976. Ebola virus is spread through the contact with blood or other body fluids, or tissue from infected people or animals. The symptoms include fever, headache, muscle pain and chills and later, a person may experience internal bleeding resulting in vomiting or coughing blood.
Marburg virus identified in 1967 in the lab workers in Germany, who were exposed to the infected monkeys imported from Uganda. Marburg virus is similar to Ebola virus, which cause hemorrhagic high fever and bleeding throughout the body that can lead to shock, organ failure and death.
Though the Rabies vaccines are introduced, Rabies condition remains a serious problem in India and parts of Africa. Rabies is caused by the rabies virus which spreads through the saliva of infected animals. The symptoms of rabies include fever, headache, excess salivation, muscle spasms, paralysis and mental confusion. IT destroys the brain.
HIV is the deadliest virus, it is an infectious disease . About 32 million people died from HIV, since the early 1980’s. HIV infection is caused by the human immunodeficiency virus. It can transmitted from contact with infected blood, semen, or vaginal fluids. The is mainly spread by having unprotected sex with someone who has HIV and the other way of getting it is by sharing drug needles with someone who is infected with HIV.
Till 1980, humans battled smallpox for thousands of years, and the disease killed about 1 in 3 of those it infected. It left the infected survivors with deep, permanent scars and, often, blindness. Smallpox is caused by a poxvirus that is transmitted from person to person. Smallpox causes High fever, characteristic rash, and may kill about one-third of those infected.