A: In the last decade we’ve really had two major circulating forms of virus that we’re particularly concerned about — that is the avian flu, or
bird flu
, and the swine H1N1 virus. They are both influenza A viruses, but in terms of their genetic makeup and how they behave they are very, very
different infections
.
Is H1N1 the same as H5N1?
The 2009 H1N1 and H5N1 influenza viruses are newly (re-) emerged influenza A viruses (2009 A(H1N1) and A(H5N1), respectively) that have recently posed tremendous health threats in many regions worldwide. With the 2009 outbreak of H1N1 influenza A, the world witnessed the first
influenza pandemic
of the 21st century.
Is the Spanish flu and H1N1 the same?
The 1918 Spanish flu was the first of three flu pandemics caused by H1N1 influenza A virus ; the most recent one was the 2009 swine flu pandemic. The 1977 Russian flu was also caused by H1N1 virus.
What was the bird flu called?
Bird flu, also known as avian influenza , is a type A influenza virus. It is lethal to poultry and is potentially fatal in humans. Bird flu spreads between both wild and domesticated birds.
Is H5N1 a coronavirus?
Avian influenza A (H5N1) and severe acute respiratory syndrome (SARS) coronavirus are infections that cause a severe viral pneumonia leading to acute respiratory dysfunction syndrome and carry a high case-fatality rate.
Why is it called H5N1?
The name H5N1 refers to the subtypes of
surface antigens present
on the virus: hemagglutinin type 5 and neuraminidase type 1 Genotype Z of H5N1 is now the dominant genotype of H5N1. Genotype Z is endemic in birds in southeast Asia and represents a long term pandemic threat.
Which is worse bird flu or swine flu?
Swine Flu Beats Bird Flu in Human-to-Human Transmission.
What does the H stand for in H1N1?
Influenza A viruses are divided into subtypes based on two proteins on the surface of the virus: hemagglutinin (H) and neuraminidase (N).
What does H7N9 stand for?
Influenza A virus subtype H7N9 (A/H7N9) is a bird flu strain of the species Influenza virus A (avian influenza virus or bird flu virus). Avian influenza A H7 viruses normally circulate amongst avian populations with some variants known to occasionally infect humans.
Is H1N1 still around?
The A/H1N1pdm09 virus is now one of the seasonal flu viruses that circulate each winter If you’ve had flu in the last few years, there’s a chance it was caused by this virus.
Where did H1N1 originally come from?
The EAsw H1N1, which is derived from avian H1N1 , was first detected in Belgium in 1979 and since then has become established in the European swine population (Pensaert et al., 1981; Scholtissek et al., 1983; Brown, 2000).
Did swine flu originated in China?
2020 G4 EA H1N1 publication G4 EA H1N1, also known as the G4 swine flu virus (G4) is a swine influenza virus strain discovered in China.
How did bird flu end?
nothing happened The virus continued to kill chickens and to occasionally infect and sometimes kill people. But as the years passed, the number of human H5N1 cases subsided. There has not been a single H5N1 human infection detected since February 2017.
Is there a vaccine for H5N1?
Influenza A (H5N1) vaccine is used for active immunization to prevent disease caused by the influenza A virus H5N1 subtype in patients over 6 months of age at increased risk of exposure. Influenza A (H5N1) vaccine is available under the following different brand names: Audenz.
Is there a vaccine for bird flu?
While avian flu vaccines are currently available , they are not being used on a large scale on poultry farms because this hinders the ability to conduct surveillance testing, which helps detect the virus in
unvaccinated flocks
and limit the spread of the disease.
Is H1N1 still around in 2021?
Drop in H1N1 cases continues in 2021 after hitting 4-year low in 2020.
Was the Spanish flu an avian flu?
The 1918 influenza pandemic was the most severe pandemic in recent history. It was caused by an H1N1 virus with genes of avian origin Although there is not universal consensus regarding where the virus originated, it spread worldwide during 1918-1919.
What caused the H1N1 pandemic?
In the spring of 2009, scientists recognized a particular strain of flu virus known as H1N1. This virus is a combination of viruses from pigs, birds and humans that causes disease in humans. During the 2009-10 flu season, H1N1 caused the respiratory infection in humans that was commonly referred to as swine flu.
Is bird flu still around 2022?
Learn about 2022 detections of HPAI in Commercial and Backyard Flocks. Wild birds can be infected with HPAI and show no signs of illness They can carry the disease to new areas when migrating, potentially exposing domestic poultry to the virus.
Will H5N1 become a pandemic?
It is by no means certain that A/H5N1 will cause the next human influenza pandemic ; however, most experts predict that the most likely source of the next pandemic will be Southeast Asia.
Sources
https://pubmed.ncbi.nlm.nih.gov/20651828/
https://en.m.wikipedia.org/wiki/2009_swine_flu_pandemic