A Pandemic disease is an epidemic, infestation or outbreak of infectious, toxic and communicable disease that spread and expand across a enormous area, for instance numerous continents, internationally and globally affecting a considerable and significant number of people. This globally endemic disease with a stable number of infected people is not a pandemic.
In human history, there have been number of pandemics of diseases such as small-pox; the most deadly, tragic and incurable pandemic experienced in history/ancient time, was the "Black death" (was known for plaque), which was killed 75-200 million people worldwide in 14th century. It was caused by the bacterium yersinia pesttis and may also caused by septicaemic or pneumonia plaques.
In 1918, a pandemic which affected the people worldwide, a Spanish Flu, also known as the Great influenza epidemic or 1918 influenza pandemic, was exceptionally deadly life-threatening universally influenza pandemic caused by H1N1 influenza virus. The premature cases was found in France, Germany and United kingdom in April. After 2 years, approximately, two-third of population around 500 million world-wide infected, was infected in four successive waves.
Contemporarily, pandemics include Tuberculosis, HIV/AIDS & COVID-19.
Coronavirus disease 2019 (COVID-19) is deadly epidemic disease spread by severe acute respiratory syndrome coronavirus 2(SARS-COV 2). It's mainland, engendered and implanted found in Wuhan, China, December 2019. This disease has since caused globally and internationally, leading to ongoing pandemic - it's about to 3rd wave come.
Human immunodeficiency virus infection and acquired immunodeficiency syndrome (HIV/AIDS) is a range and stretch of condition caused by infection with the human immunodeficiency virus (HIV), a retrovirus. These symptoms may be experienced or notices by earlier stage or may suffer a brief period of influenza-like symptoms.
Tuberculosis (TB), is a infectious disease generally caused by Mycobacterium tuberculosis (MTB) bacteria. It mainly affects the lungs or may influence other parts of the body.
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