What is H1N1 virus Wikipedia?
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What is H1N1 virus Wikipedia?
In virology, influenza A virus subtype H1N1 (A/H1N1) is a subtype of Influenza A virus. Well known outbreaks of H1N1 strains in humans include the Spanish flu, the 1977 Russian flu pandemic and the 2009 swine flu pandemic. It is an orthomyxovirus that contains the glycoproteins hemagglutinin and neuraminidase.
What was the first H1N1 virus?
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.
Who created the H1N1 vaccine?
1940s: Thomas Francis, Jr., MD and Jonas Salk, MD serve as lead researchers at the University of Michigan to develop the first inactivated flu vaccine with support from the U.S. Army.
How long did H1N1 virus last?
The 2009 swine flu pandemic, caused by the H1N1 influenza virus and declared by the World Health Organization (WHO) from June 2009 to August 2010, is the third recent flu pandemic involving the H1N1 virus (the first being the 1918–1920 Spanish flu pandemic and the second being the 1977 Russian flu).
Was H1N1 a pandemic or pandemic?
Is there still a vaccine for H1N1?
Swine flu vaccines are safe and can prevent disease. However, the 1976 vaccine rollout caused health problems for many people who were not at risk of contracting the virus. In contrast, the successful 2009 vaccine rollout helped to end the H1N1 influenza pandemic in 2010.
How many have died from H5N1?
By early 2006, WHO had linked 78 deaths to the virus out of 147 reported cases of H5N1 bird flu in humans….Death Estimates For Major Flu Pandemics of the 20th Century.
| Year | Worldwide | United States |
|---|---|---|
| 1968-1969 | 1,000,000 | 40,000 |
Who made H1N1 vaccine?
Injectable H1N1 vaccines are manufactured by CSL, Sanofi Pasteur or Novartis. They are inactivated H1N1 virus vaccines used for immunization of individuals 6 months of age and older against influenza disease caused by H1N1 2009 virus.
