Coronavirus has left nine dead and hundreds hospitalised since the outbreak began in Wuhan, China, in December. The deadly virus that transmitted from animals to humans is closely related to the SARS virus.
Like the common cold, the symptoms may include runny nose, coughing, headache, sore throat and a feeling of being unwell. People who are infected by Coronavirus gets pneumonia that doesn't respond to antibiotic treatment.
Health authorities across the word have stepped up precautions to prevent a repeat of the disruptions and deaths during the 2003 SARS crisis.
Here are eleven deadly viruses that hit the world:
SARS
SARS (Severe Acute Respiratory Syndrome), is caused by SARS coronavirus— a member of the coronavirus family of viruses that causes common cold. The virus identified in Asia in February 2003, causes severe illness marked initially by systemic symptoms of muscle pain, headache, and fever, followed in 2–14 days by the onset of respiratory symptoms, mainly cough, dyspnea, and pneumonia. SARS virus can be detected from a blood test, a nasal swab or a sample from your stool or urine.
Ebola
Ebola is a rare but deadly virues that causes fever, body aches, and diarrhea, and sometimes bleeding inside and outside the body. As the virus spreads through the body, it damages the immune system and organs. Ultimately, it causes levels of blood-clotting cells to drop. This leads to severe, uncontrollable bleeding.
People can get Ebola Virus Disease (EVD) through direct contact with an infected animal (bat or nonhuman primate) or a sick or dead person infected with Ebola virus. As of now there is no cure or specific treatment for the Ebola virus disease.
Zika virus
Zika virus disease is caused by a virus transmitted primarily by Aedes mosquitoes, which bite during the day. Symptoms are generally mild and include fever, rash, conjunctivitis, muscle and joint pain, malaise or headache. Symptoms typically last for 2–7 days. However, most people with Zika virus infection do not develop symptoms. Zika virus passed from a pregnant woman to her fetus can cause pregnancy complications such as fetal loss, stillbirth, and preterm birth.
Nipah virus
The Nipah virus is a type of RNA virus in the genus Henipavirus. The virus, which was first identified in 1999 during an outbreak among pig farmers in Malaysia, can both spread between people and from other animals to people. Spread typically requires direct contact with an infected source. The virus normally circulates among specific types of fruit bats. Ity can an also be transmitted through contaminated food or directly between people. There is no treatment or vaccine available for either people or animals. The primary treatment for humans is supportive care.
Dengue virus
Dengue is a mosquito-borne viral infection causing a severe flu-like illness and, sometimes causing a potentially lethal complication called severe dengue. The virus responsible for causing dengue, is called dengue virus (DENV). The symptoms are sudden high fever with severe headache, sever pain in joints and muscles,
pain behind the eyes, severe fatigue, nausea, vomiting, skin rash, which appears two to five days after the onset of fever. The incidence of dengue has increased 30-fold over the last 50 years.
Rabies virus
Rabies is a viral disease that causes inflammation of the brain in humans and other mammals. It mainly spreads through a bite from an infected animal. Without early treatment, it is usually fatal. Early symptoms can include fever and tingling at the site of exposure followed by headache, excess salivation, muscle spasms, paralysis and mental confusion.
Lassa virus
Lassa fever, also known as Lassa hemorrhagic fever (LHF), is a type of viral hemorrhagic fever caused by the Lassa virus. Humans usually become infected with Lassa virus through exposure to food or household items contaminated with urine or feces of infected Mastomys rats. Many of those infected by the virus do not develop symptoms. When symptoms occur they typically include fever, weakness, headaches, vomiting, and muscle pains.
Marburg virus
Marburg hemorrhagic fever (MHF), caused by Marburg virus, is a severe viral hemorrhagic disease. Marburg like Ebola viruses is considered to be zoonotic infections (transmitted to humans from life cycles in other animals). Symptoms are fever, chills, headaches and muscle aches early in the disease; symptoms worsen and may lead to hemorrhagic fever and death. Treatment is limited to supportive care, usually in an intensive-care unit. The disease often spreads from person to person by exposure to blood and other bodily secretions.
Hantavirus
Hantaviruses are a family of viruses spread mainly by rodents and can cause varied disease syndromes in people worldwide. Infection with any hantavirus can produce hantavirus disease in people. Hantaviruses in the Americas are known as “New World” hantaviruses and may cause hantavirus pulmonary syndrome (HPS).
Influenza virus
Influenza—commonly known as 'flu'— is an infectious disease caused by an influenza virus. It is different from the stomach 'flu' viruses that cause diarrhea and vomiting. Influenza virus attacks your respiratory system—your nose, throat and lungs. The most common symptoms include: high fever, runny nose, sore throat, muscle and joint pain, headache, coughing, and feeling tired.
Smallpox
Smallpox—also known as variola— is an extremely contagious and deadly virus for which there is no known cure. Currently, there is no evidence of naturally occurring smallpox transmission. It has been completely eradicated by 1980 as a result of worldwide vaccination programs . Patients experience flu-like symptoms, along with a rash that appears first on the face, hands and forearms and then later appears on the torso.
