Viruses cannot exist individually and for survival they need to spread to another host. This is why apart from the day to day common sicknesses there are some disorders where patients at times need to sacrifice their life. All of these are caused when the virus is spread from one host to the other. Viruses are smaller and much dangerous than bacteria where it can be multiplied through the process of mutation .Though few of them are simply life taking with little chance of survival; others can be averted through vaccinations and preventive measures. The article will enlighten you about the top 10 diseases caused by viruses.
Top Ten Diseases Caused by Viruses
Get to know in details about the top ten diseases caused by viruses.
HIV/AIDS is s disease of the human immune system caused by infection with human immunodeficiency virus (HIV). The virus can also be transmitted via contaminated blood transfusions, hypodermic needles, from mother to child during pregnancy, delivery or breast feeding. Those at highest risk include injection drug users who share needles, babies born to mothers with HIV. It is a tricky ailment which causes no symptoms for a decade or longer and at this stage carrier may transmit the infection to others unknowingly.
Ebola, also known as Ebola hemorrhagic fever (EHF) is caused by any of four of the five known ebola viruses- Bundibugyo virus (BDBV), Ebola virus (EBOV), Sudan virus (SUDV), and Taï Forest virus (TAFV). The illness spreads through the blood, multiplying in many organs causing severe damage to the liver, lymphatic system, kidneys, ovaries, and testes. Even platelets and linings of arteries are severely damaged, which results in profuse bleeding. The onset of the disease is sudden, with fever, chills, headache, anorexia, and muscle pain.
Originated in China in November 2002, severe acute respiratory syndrome (SARS) is a contagious and fatal respiratory illness with fatality rate of about 70 percent with the highest fatality rate among victims over the age of 65. From its homeland, the sickness soon spread worldwide, carried by unsuspecting travellers and has not claimed to have been eradicated yet. On 16 April 2003, the WHO issued a press release stating a coronavirus identified by a number of laboratories was the official cause of SARS. Antibiotics are ineffective, as SARS is a viral disease. Treatment of SARS so far has been largely supportive with antipyretics, supplemental oxygen and ventilation support as needed.
Polio or Poliomyelitis is an infectious disease caused by virus spreading from one person to another through the fecal-oral route. Its victims are mainly kids below the age group five and one among every 200 infections leads to permanent paralysis. At times it becomes so acute that within hours of entering the nervous system, it can cause total paralysis. Headache, fever, vomiting, fatigue, pain in the limbs and stiffness in the neck can be its early symptoms though 90% of the cases shows no indications.
Reported of causing 2.6 million casualties until 1980, Measles is yet another dngerous and contagious disease caused due to a virus in the paramyxovirus family. It generally develops in the cells that line the back of the lungs and throat. Even after decades of introducing vaccination, it still remains one of the life ending reasons among kids. High fever, cough, red and watery eyes, runny nose and small white spots are its original indications while rash erupts spreading all over the body can be it its later phase.
6. Viral Hemorrhagic Fever
The five discrete families of RNA viruses- Arenaviridae, Filoviridae, Bunyaviridae, Flaviviridae and Rhabdoviridae are solely responsible for causing Viral Hemorrhagic Fever among humans as well as animals. These virus can be transmitted through various ways including respiratory route.Treatment should be started as soon as symptoms of fever and bleeding disorders shows up or else high fever and shock in the later phase can even cause life.
Meningitis is a virus caused disease which results in inflammation of the meninges – the protective membrane area around the spinal cord and the brain. Since the inflammation takes place in the most sensitive part of the body, many a times it has become life threatening. It can even lead to grave consequences such as hydrocephalus, deafness, cognitive deficits and epilepsy despite the fact that certain forms of the illness can be prevented via immunization.
Influenza virus infection is a highly contagious airborne disease that causes an acute febrile illness and results in variable degrees of systemic symptoms, ranging from mild fatigue to respiratory failure and end of life. Commonly known as Flu, it is caused by RNA viruses and can occasionally lead to pneumonia, if ignored. Influenza spreads around the world in seasonal epidemics, resulting in about three to five million yearly cases of severe illness and about 250,000 to 500,000 yearly lives.
9. Common Cold
Referred medically as a viral upper respiratory tract infection, Common Cold which everyone of has suffered from is caused by 200 multiple viruses. Sore throat, runny nose, coughing, fever and sneezing are its most common syndromes which can last from two to ten days depending upon the preventive care and medicene. It is also known to be the most recurrent infectious disease in humans that can victimise an individual two to three times on yearly average.
Smallpox is the rarest disease caused by either of the two variants – Variola major and Variola minor. It is also known by the Latin name, Variola or Variola vera which means spotted. It is believed that smallpox was recognised as early as 10,000 BC. High fever, fatigue, and a rash with flat red sores over the body are its symptoms. Due to immunization throughout the glob it is said to be eradicated.