What is an Epidemic?

An epidemic is a disease that spreads over a large area, for example across several continents or around the world. Epidemics can also occur in important agricultural organisms (livestock, crop plants, fish, tree species) or other organisms. Cholera, Bubonic plague, smallpox and influenza are some of the most brutal killers in human history. And outbreaks of these diseases across international borders are properly defined as epidemics, especially smallpox, which, throughout history, have killed between 300–500 million people in their 12,000 year existence.

A new coronavirus that causes cases of an acute respiratory disease, now called coronavirus disease 2019 (COVID-19), was identified in late December 2019 in Wuhan, Hubei, China. It was in December 2019. According to media reports, more than 190 countries and territories have been affected, with major outbreaks in the United States, central China, Italy, South Korea and Iran. On March 11, 2020, the World Health Organization characterized the spread of COVID-19 as a pandemic.

Outbreak: 10 worst pandemics in history

Coronavirus disease 2019 (COVID-19) – The 2019–20 coronavirus pandemic is a pandemic of coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The outbreak was first identified in December 2019 in Wuhan, Hubei, China, and was declared a pandemic by the World Health Organization (WHO) on 11 March 2020. As of 24 March, there have been over 407,000 cases of COVID-19 in India. In more than 190 countries and territories, resulting in more than 18,200 deaths and more than 104,000 recoveries.
Flu pandemic (1968) - Death toll: 1 million Cause: Influenza A type 2 flu pandemic sometimes referred to as "Hong Kong flu" 1968 flu pandemic H3N2 strain of Influenza A virus, H2N2 subtype was due to a genetic defect.
Asian flu (1956–1958) - Death toll: 2 million, Cause: influenza - Asian flu was a pandemic outbreak of Influenza A of the H2N2 subtype, which originated in China in 1956 and lasted until 1958. Over its two-year duration, Asian flu moved from the Chinese province of Guizhou to Singapore, Hong Kong and the United States.
Flu pandemic (1918) - Death toll: 20 -50 million, Cause: Influenza - There was a dangerous outbreak of influenza worldwide between 1918 and 1920, infecting more than a third of the world's population and killing 20 - ended the lives of 50 million people. People.
Sixth Cholera Pandemic (1910–1911) - Death toll: 800,000+ Cause: Cholera Like its five previous incarnations, the Sixth Cholera Pandemic originated in India, before spreading to the Middle East, North Africa, Eastern Europe and Russia Its death toll crossed 800,000. The Sixth Cholera Epidemic was also the source of the last American outbreak of cholera (1910–1911).
Flu pandemic (1889–1890) - Death toll: 1 million Cause: Influenza, originally called the "Asiatic flu" or "Russian flu", this strain originated as an outbreak of the H2N2 subtype of the Influenza A virus was referred to. Instead the virus subtype of influenza was found to be H3N8.
Third Cholera Epidemic (1852–1860) - Death toll: 1 million Cause: cholera The third major outbreak of cholera in the 19th century was from 1852 to 1860. Like the first and second pandemics, the third cholera pandemic originating in India spread through the Ganges River Delta before tearing apart. through Asia, Europe, North America and Africa and ending the lives of more than one million people.
The Black Death (1346–1353) - Death toll: 75 - 200 million Cause: bubonic plague An outbreak of plague from 1346 to 1353 killed 75 to 200 million people in Europe, Africa, and Asia. Believed to have originated in Asia, the plague spread across the continent via fleas living mostly on rats aboard merchant ships.
Plague of Justinian (541–542) - Death toll: 25 million Cause: bubonic plague The Plague of Justinian was an outbreak of bubonic plague that afflicted the Byzantine Empire and Mediterranean port cities, killing 25 million people during its long reign Were. Terror killed.
Antonine Plague (165 AD) - Death toll: 50 million, Cause: unknown Also known as the Plague of Galen, the Antonine Plague was an ancient pandemic that affected Asia Minor, Egypt, Greece, and Italy and was believed to It was believed to be either smallpox or measles, although the exact cause is still unknown.