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26 Kinds of Viruses in Humans, Check Out the Most Deadly in the World

22. Types of Rubella Virus

The virus is transmitted through contact with droplets from an infected person when they cough or sneeze. This virus as the name implies causes rubella, also known as German measles or three-day measles.

The rash can start on the face and spread all over the body. Fever, sore throat and fatigue may also occur. There is no cure for this disease, treatment is supportive. Rubella can be prevented through vaccination.

23. Types of Hepatitis B Viruses

The next types of viruses are hepatitis B virus. This virus is transmitted when bodily fluids, such as blood and semen, from an infected person enter another person’s body.

For example, an infected mother can pass the virus to her baby at birth, an infected person can pass it on to their sexual partners and an infected drug addict can transmit the virus by sharing needles and syringes with others.

The hepatitis B virus causes acute viral hepatitis (liver infection), which begins with generalized illness, loss of appetite, nausea, vomiting, body aches, low-grade fever and dark urine, then progresses to jaundice.

Complications include fulminant liver or liver failure, chronic hepatitis, cirrhosis and hepatocellular carcinoma (liver cancer). Hepatitis B is treated with antiviral drugs and can be prevented by vaccination.

24. Kinds of Viruses that Kyasanur Forest

Scientists discovered the Kyasanur Forest Virus (KFD) virus in forests on India’s southwest coast in 1955. The virus is transmitted by ticks, but scientists say it is difficult to pinpoint any carrier.

It is assumed that rats, birds and wild boars can be hosts. People infected with this virus suffer from high fever, strong headache, and muscle aches that can cause bleeding.

25. Kinds of Viruses That Are Crazy Cows

Mad cow disease has also shocked the world, including Indonesia, which has many breeders. Mad cow disease attacks cows as well as humans. In cattle, this disease is also known as Bovine Spongiform Encephalopathy (BSE), while in humans it is known as variant Creutzfeldt-Jakob Disease (vCJD).

This disease can be transmitted through consumption or contact with infected cow carcasses. Human contact will not transmit mad cow disease, unless there is cannibalism or transplantation of infected human organs.

Like in cows, mad cow disease is also deadly to humans. Symptoms begin with mental and cognitive disorders such as psychosis, senile dementia, and reduced ability to think. This symptom is then followed by the formation of empty cavities in the brain that lead to paralysis and death.

26. Types of SARS-CoV-2 Viruses

SARS-CoV-2 belongs to the same large family of viruses as SARS-CoV, known as coronaviruses, and was first identified in December 2019 in the Chinese city of Wuhan. The virus likely originated in bats, like SARS-CoV, and passed through transitional animals before infecting humans.

Since its emergence, the virus has infected tens of thousands of people in China and thousands more worldwide. The outbreak of the disease called Covid-19 prompted massive quarantines in Wuhan and nearby cities, restrictions on travel to and from affected countries, and efforts around the world to develop diagnostics, treatments and vaccines.

The Covid-19 death rate is around 2.3% and most cases occur in people who are older or have underlying health conditions, making them the most vulnerable and at risk for severe illness and complications. Symptoms are quite common, such as fever, dry cough and shortness of breath, and the disease can progress to pneumonia in severe cases.

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