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2021-05-14

How does H1N1 affect the body?

How does H1N1 affect the body?

The symptoms of 2009 H1N1 flu virus in people include fever, cough, sore throat, runny or stuffy nose, body aches, headache, chills and fatigue. Some people may have vomiting and diarrhea. People may be infected with the flu, including 2009 H1N1 and have respiratory symptoms without a fever.

How did the H1N1 start?

Around 1918, the ancestral virus, of avian origin, crossed the species boundaries and infected humans as human H1N1. The same phenomenon took place soon after in America, where the human virus infected pigs; it led to the emergence of the H1N1 swine strain, which later became known as swine flu.

What happens if you have swine flu?

Swine flu (swine influenza) is a respiratory disease caused by viruses (influenza viruses) that infect the respiratory tract of pigs, resulting in nasal secretions, a barking cough, decreased appetite, and listless behavior. Swine flu produces most of the same symptoms in pigs as human flu produces in people.

Where did H1N1 affect?

The new H1N1 virus emerged in the United States in April 2009, in Texas, New York, California, and several other places. The virus was suspected of having been carried to those states by individuals who had been in affected areas in Mexico and then traveled from there.

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Who was most affected by H1N1?

Swine Flu: Who’s Most at Risk?

  • Children aged 6 months up to their 19th birthday (but the younger the child the higher the risk)
  • Pregnant women.
  • People 50 years of age and older.
  • People of any age with certain medical conditions, such as heart or lung disease (asthma, COPD, emphysema), diabetes or those with weakened immune systems.

How many countries reported cases of H1N1?

The global count of novel H1N1 influenza (swine flu) case confirmations has increased to 5,251 from 30 countries, the World Health Organization (WHO) reported today. The total includes 2,059 cases with 56 deaths in Mexico and 2,600 cases and 3 deaths reported in the United States as of yesterday.

How long did swine flu last?

The 2009 swine flu pandemic was an influenza pandemic that lasted about 19 months, from January 2009 to August 2010, and was the second of two pandemics involving H1N1 influenza virus (the first being the 1918–1920 Spanish flu pandemic).

Which country started H1N1?

The 2009 swine flu outbreak originated in Veracruz, Mexico. Health workers traced the virus to a pig farm in this southeastern Mexican state. A young boy who lived nearby was among the first people to contract the swine flu.

Which country has the most H1N1 cases?

The United States, Mexico, and Canada continued to lead the list; other countries with more than 300 cases are Australia, Chile, Japan, and the United Kingdom. The number of novel H1N1 cases in the United States grew to 11,054, the Centers for Disease Control and Prevention (CDC) reported today.

What country has the lowest flu rate?

See the full country rankings below:

Ranking Country Death rate out of 100k
1 Croatia 3.08
2 Finland 3.77
3 Macedonia 4.6
4 Italy 4.89

How many people died from swine flu 2009?

284,000

How many people died from the flu in 2020?

Between October 1, 2019 and April 4, 2020, the flu resulted in: 39 to 56 million illnesses. 410,000 to 740,000 hospitalizations. 24,000 to 62,000 deaths.

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How many people died from the flu in 2010?

The overall burden of influenza for the 2010-2011 season was an estimated 21 million influenza illnesses, 10 million influenza-associated medical visits, 290,000 influenza-related hospitalizations, and 37,000 flu-associated deaths (Table: Estimated Influenza Disease Burden, by Season — United States, 2010-11 through …

How many people died from the flu in 2009?

By the World Health Organization’s official tally, the flu pandemic of 2009-10 killed 18,449 people around the world. Those are deaths of people who had laboratory-confirmed cases of the so-called swine flu. But a fresh analysis says the real toll was 10 times higher — up to 203,000 deaths.

How many people die of the flu each year worldwide?

The World Health Organization estimates that worldwide, annual influenza epidemics result in about 3-5 million cases of severe illness and about 250,000 to 500,000 deaths.

How many people died from flu in 2019 worldwide?

In early 2019, a publication from the Global Burden of Disease Study (GBD) estimated a range of 99 000 to 200 000 annual deaths from lower respiratory tract infections directly attributable to influenza [3].

How many people die of flu in 2019?

CDC estimates that the burden of illness during the 2018–2019 season included an estimated 35.5 million people getting sick with influenza, 16.5 million people going to a health care provider for their illness, 490,600 hospitalizations, and 34,200 deaths from influenza (Table 1).

How many Americans die from flu each year?

However, influenza related deaths in the United States range from 12,000 to 61,000 annually over the last decade, according to the CDC.

How many people have died from the flu in the last 10 years?

Even the deadliest flu season of the last decade, 2017-2018, had a lower death toll with an estimated 61,000 people dying.

What age is flu most dangerous?

Although all children younger than 5 years old are considered at high risk for serious flu complications, the highest risk is for those younger than 2 years old, with the highest hospitalization and death rates among infants younger than 6 months old.

Who gets the flu the most?

Who is most likely to be infected with influenza? The same CID study found that children are most likely to get sick from flu and that people 65 and older are least likely to get sick from influenza.

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What are 3 symptoms of influenza?

People who have flu often feel some or all of these symptoms:

  • fever* or feeling feverish/chills.
  • cough.
  • sore throat.
  • runny or stuffy nose.
  • muscle or body aches.
  • headaches.
  • fatigue (tiredness)
  • some people may have vomiting and diarrhea, though this is more common in children than adults.

Which flu is the most dangerous?

The 1918 H1N1 flu pandemic, sometimes referred to as the “Spanish flu,” killed an estimated 50 million people worldwide, including an estimated 675,000 people in the United States. An unusual characteristic of this virus was the high death rate it caused among healthy adults 15 to 34 years of age.

Is Flu A or B worse?

Influenza type A and type B are similar, but type A is overall more prevalent, sometimes more severe, and can cause flu epidemics and pandemics.

What flu is going around 2020?

Influenza B Strain Dominating Early in the 2020 Flu Season.

What flu strain is going around 2020?

The committee recommended that the quadrivalent formulation of cell- or recombinant based influenza vaccines for the U.S. 2020-2021 influenza season contain the following: an A/Hawaii/70/2019 (H1N1) pdm09-like virus; an A/HongKong/45/2019 (H3N2)-like virus; a B/Washington/02/2019- like virus (B/Victoria lineage);

Is H3N2 worse than H1N1?

Conclusions: Influenza A H3N2 infection was more severe than A H1N1 or B in terms of fever, leukopenia, and C-reactive protein. Myalgia and other symptoms such as fever, headache, general malaise and sore throat were equally frequent in influenza A H3N2, A H1N1, and B infections.

What are the stages of flu?

A bout of the flu typically follows this pattern: Days 1–3: Sudden appearance of fever, headache, muscle pain and weakness, dry cough, sore throat and sometimes a stuffy nose. Day 4: Fever and muscle aches decrease. Hoarse, dry or sore throat, cough and possible mild chest discomfort become more noticeable.

How long does the 2020 flu last?

How Long Does It Last? Most symptoms get better after about 5 days. But sometimes they can last for a week or more. Even if your fever and aches are gone, you can still feel drained for a few weeks.