The Covid-19 virus has claimed thousands of lives since it was announced in December 2019. But there are several other viruses that are the same or even more deadly. The following is a summary.
The new corona virus, also called Covid-19, began in the Chinese city of Wuhan. The Covid-19 virus has spread to more than 200 countries, killing more than 33,000 people so far.This corona virus is zoonotic, meaning that it is transmitted from animals to humans. Covid-19 virus can attack various types of ages.
Although the elderly above 50 years and over are more susceptible to contracting, however in some cases, many young people are also infected.In the last few decades, many viruses have triggered epidemics and claimed thousands of lives.Some are even more deadly than Covid-19. Here are 6 other deadly viruses in the world:
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The Ebola outbreak began concurrently in the Republic of Sudan and the Democratic Republic of the Congo in 1976. This virus was transmitted to people from wild animals.Human-to-human transmission occurs through direct contact with blood or other bodily fluids, or tissue from infected people or animals.The following facts related to the Ebola virus is quoted from page WHO :
The Ebola Virus (EVD), formerly known as Ebola hemorrhagic fever, is a rare but severe disease, often fatal in humans.The average death rate for EVD cases is around 50%. Case fatality rates vary from 25% to 90% in the past Extraordinary Events (KLB).
The incubation period, ie the time interval from viral infection to the onset of symptoms, is 2 to 21 days. A person infected with Ebola cannot spread the disease until they experience symptoms.The symptoms of EVD are: Fever, Fatigue, Muscle pain, Headache, Sore throat.This is followed by: vomiting, diarrhea, rashes, symptoms of impaired kidney and liver function
In some cases, internal and external bleeding (for example, blood coming out of the gums, or blood in the stool).Laboratory findings include low white blood cell and platelet counts and elevated liver enzymes.
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This is considered the most deadly virus of all types of viruses. This disease was first discovered in the early 1980s. Since then an estimated 32 million people have died from this virus.Here are facts related to HIV reported from the WHO page :HIV continues to be a public health problem. So far it has claimed more than 32 million lives people living with HIV to live long and healthy lives.There are around 37.9 million people living with HIV at the end of 2018.
HIV can be diagnosed through a rapid diagnostic test that can give results the same day. This greatly facilitates diagnosis and is related to treatment and care.There is no cure for HIV infection. However, effective antiretroviral drugs can control the virus and help prevent transmission to others.
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Commonly known as the flu. Influenza is an infectious disease caused by influenza virus. The deadliest flu pandemic, also known as the Spanish flu, began in 1918. This virus infects up to 40% of the world’s population, killing around 50 million people.Influenza may not always be considered by most people as a serious illness. Symptoms of headaches, colds, coughs and muscle aches can be symptoms of severe flu.
But seasonal influenza kills up to 650,000 people each year. That is why influenza vaccination is very important, especially to protect young children, the elderly, pregnant women, or people who have a low immune system .Influenza is considered a seasonal flu because it appears in the coldest season for one year. Once in the northern hemisphere winter and once in the southern hemisphere winter. And circulates throughout the year in the tropics and sub-tropics.
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Hantavirus is transmitted from feces of infected mice. The hantavirus outbreak was first reported on March 02, 2000. Twelve cases were reported from Las Tablas and Guarare district, Los Santos Province.Including three deaths due to Hantavirus Lung Syndrome. The diagnosis was confirmed by serological tests on samples from three survivors.
Testing was carried out by the Centers for Disease Control and Prevention (CDC) in the United States.Preventive steps are being taken to inform the public to avoid contact with rats and their droppings. A seroprevalence study in humans and rat capture for virus detection and reservoir species identification is underway.
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Dengue is a viral infection that is transmitted by mosquitoes. The virus that causes dengue fever is called the dengue virus (DENV). According to WHO, dengue fever causes the death of 50 to 100 million people per year.The following facts related to dengue reported from the WHO page :
Dengue is a viral infection that is transmitted by mosquitoes.There are four DENV serotypes, meaning that it is very likely to be infected four times.While many DENV infections only produce mild disease. DENV can cause diseases such as acute flu. Sometimes this develops into a potentially deadly complication, called severe dengue.
There is no specific treatment for dengue fever either ribgan or severe. Early detection of disease progression associated with severe dengue and appropriate medical treatment reduces the death rate from severe dengue fever to below 1%.Dengue fever is found in tropical and sub-tropical regions throughout the world, mostly in urban and semi-urban areas.
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SARS and MERS
Before the Covid-19 pandemic, there were two other epidemics of similar viruses. They are Severe Acute Respiratory Syndrome (SARS-CoV) and Middle Eastern Respiratory Syndrome (MERS-CoV). Both Covid-19, SARS, and MERS are family Coronaviruses (CoV).SARS and MERS have relatively high mortality rates, but the spread of this disease is only localized in certain areas. However, there are several other viruses that have jumped from animals to humans.
SARS coronavirus (SARS-CoV) is a virus that was identified in 2003. SARS-CoV is considered as an animal virus from an uncertain animal reservoir, perhaps a bat, that spreads to other animals (ferret cats) and humans were first infected in Guangdong province in Southern China in 2002.The SARS epidemic spread to 26 countries and produced more than 8000 cases in 2003.
SARS-CoV transmission is mainly from person to person. It seems to have happened especially during the second week. In accordance with the peak of virus excretion in respiratory and fecal secretions as well as when cases with severe illness begin to worsen clinically.WHO and colleagues from Oxford University, Imperial College London and the Pasteur Institute have estimated that, since 2016 there have been 1,465 cases of Middle East Respiratory Syndrome (MERS-CoV) coronavirus.
Between 300 and 500 deaths may be prevented because of global efforts to detect infections early and reduce transmission.In 2012, a novel virus never before seen in humans was first identified in a resident from Saudi Arabia.MERS-CoV is a respiratory virus that can cause severe illness and has been fatal in around 35% of patients to date.MERS are zoonoses and infected people from direct or indirect contact with the dromedary camel.