What are the types of pandemics write in 100 words who will give the answer i will mark it as brainliest answer
Answers
Answer:
According to the WHOTrusted Source, a pandemic is defined as the “worldwide spread of a new disease.”
When a new disease first emerges, most of us lack the natural immunity to fight it off. This can cause a sudden, sometimes rapid, spread of the disease between people, across communities, and around the world. Without a natural immunity to fight off an illness, many people can become sick as it spreads.
The WHO is responsible for announcing the emergence of a new pandemic based on how the spread of the disease fits into the following 6 phasesTrusted Source:
Phase 1. Viruses circulating among animal populations haven’t been shown to transmit to human beings. They’re not considered a threat and there’s little risk of a pandemic.
Phase 2. A new animal virus circulating among animal populations has been shown to transmit to human beings. This new virus is considered a threat and signals the potential risk of a pandemic.
Phase 3. The animal virus has caused disease in a small cluster of human beings through animal to human transmission. However, human to human transmission is too low to cause community outbreaks. This means that the virus places humans at risk but is unlikely to cause a pandemic.
Phase 4. There has been human-to-human transmission of the new virus in considerable enough numbers to lead to community outbreaks. This kind of transmission among humans signals a high risk of a pandemic developing.
Phase 5. There has been transmission of the new virus in at least two countries within the WHO regionTrusted Source. Even though only two countries have been affected by the new virus at this point, a global pandemic is inevitable.
Phase 6. There has been transmission of the new virus in at least one additional country within the WHO region. This is known as the pandemic phase and signals that a global pandemic is currently occurring.
As you can see above, pandemics aren’t necessarily defined by their growth rate but rather by the spread of the disease. However, understanding the growth rate of a pandemic can still help health officials prepare for an outbreak.
Many disease outbreaksTrusted Source follow a growth or spread pattern described as exponential growth. This means they spread at a rapid rate over a specific period of time — days, weeks, or months.
Think of driving a car and pressing on the gas pedal. The farther you travel, the faster you go — that’s exponential growth. Many initial disease outbreaks, like the 1918 influenza pandemic, seem to follow this growth pattern.
Some diseases also spread sub-exponentially, which is at a slower rate. This is like a car that maintains speed going forward — it doesn’t increase in speed across the distance it travels.
For example, one research studyTrusted Source found that the 2014 Ebola epidemic seemed to follow a much slower disease progression at the local level in some countries even though it spread faster, or exponentially, in others.
When public health officials know how quickly a disease is spreading, it can help them determine how quickly we need to move to help slow that spread.
Explanation:
Answer:
HIV/AIDS PANDEMIC (AT ITS PEAK, 2005-2012)
Death Toll: 36 million
Cause: HIV/AIDS
First identified in Democratic Republic of the Congo in 1976, HIV/AIDS has truly proven itself as a global pandemic, killing more than 36 million people since 1981. Currently there are between 31 and 35 million people living with HIV, the vast majority of those are in Sub-Saharan Africa, where 5% of the population is infected, roughly 21 million people. As awareness has grown, new treatments have been developed that make HIV far more manageable, and many of those infected go on to lead productive lives.
FLU PANDEMIC (1968)
Death Toll: 1 million
Cause: Influenza
A category 2 Flu pandemic sometimes referred to as “the Hong Kong Flu,” the 1968 flu pandemic was caused by the H3N2 strain of the Influenza A virus, a genetic offshoot of the H2N2 subtype. From the first reported case on July 13, 1968 in Hong Kong, it took only 17 days before outbreaks of the virus were reported in Singapore and Vietnam, and within three months had spread to The Philippines, India, Australia, Europe, and the United States.
ASIAN FLU (1956-1958)
Death Toll: 2 million
Cause: Influenza
Asian Flu was a pandemic outbreak of Influenza A of the H2N2 subtype, that originated in China in 1956 and lasted until 1958. In its two-year spree, Asian Flu traveled from the Chinese province of Guizhou to Singapore, Hong Kong.
FLU PANDEMIC (1918)
Death Toll: 20 -50 million
Cause: Influenza
Between 1918 and 1920 a disturbingly deadly outbreak of influenza tore across the globe, infecting over a third of the world’s population and ending the lives of 20 – 50 million people. Of the 500 million people infected in the 1918 pandemic, the mortality rate was estimated at 10% to 20%, with up to 25 million deaths in the first 25 weeks alone. What separated the 1918 flu pandemic from other influenza outbreaks was the victims.
SIXTH CHOLERA PANDEMIC (1910-1911)
Death Toll: 800,000+
Cause: Cholera
Like its five previous incarnations, the Sixth Cholera Pandemic originated in India where it killed over 800,000, before spreading to the Middle East, North Africa, Eastern Europe and Russia. The Sixth Cholera Pandemic was also the source of the last American outbreak of Cholera (1910–1911). American health authorities, having learned from the past, quickly sought to isolate the infected, and in the end only 11 deaths occurred in the U.S.
FLU PANDEMIC (1889-1890)
Death Toll: 1 million
Cause: Influenza
Originally the “Asiatic Flu” or “Russian Flu” as it was called, this strain was thought to be an outbreak of the Influenza A virus subtype H2N2, though recent discoveries have instead found the cause to be the Influenza A virus subtype H3N8. The first cases were observed in May 1889 in three separate and distant locations, Bukhara in Central Asia (Turkestan), Athabasca in northwestern Canada, and Greenland. Rapid population growth of the 19th century, specifically in urban areas, only helped the flu spread, and before long the outbreak had spread across the globe.
THIRD CHOLERA PANDEMIC (1852–1860)
Death Toll: 1 million
Cause: Cholera
Generally considered the most deadly of the seven cholera pandemics, the third major outbreak of Cholera in the 19th century lasted from 1852 to 1860. Like the first and second pandemics, the Third Cholera Pandemic originated in India, spreading from the Ganges River Delta before tearing through Asia, Europe, North America and Africa and ending the lives of over a million people. British physician John Snow, while working in a poor area of London, tracked cases of cholera and eventually succeeded in identifying contaminated water as the means of transmission for the diseas.
THE BLACK DEATH (1346-1353)
Death Toll: 75 – 200 million
Cause: Bubonic Plague
From 1346 to 1353 an outbreak of the Plague ravaged Europe, Africa, and Asia, with an estimated death toll between 75 and 200 million people. Thought to have originated in Asia, the Plague most likely jumped continents via the fleas living on the rats that so frequently lived aboard merchant ships.
PLAGUE OF JUSTINIAN (541-542)
Death Toll: 25 million
Cause: Bubonic Plague
Thought to have killed perhaps half the population of Europe, the Plague of Justinian was an outbreak of the bubonic plague that afflicted the Byzantine Empire and Mediterranean port cities, killing up to 25 million people in its year long reign of terror. Generally regarded as the first recorded incident of the Bubonic Plague, the Plague of Justinian left its mark on the world, killing up to a quarter of the population of the Eastern Mediterranean.
ANTONINE PLAGUE (165 AD)
Death Toll: 5 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 is thought to have been either Smallpox or Measles, though the true cause is still unknown. This unknown disease was brought back to Rome by soldiers returning from Mesopotamia