The vaccine helps pork producers protect their herds from the pandemic H1N1 (pH1N1) strain
of Swine Influenza Virus (SIV).
However, the role of local, regional, and global swine - flows in the ecology and evolution
of swine influenza viruses remains unclear.
The 2009 A / H1N1 was also a derivative of two different strains
of swine influenza — one that had been circulating in Europe and Asia and another that was circulating in the Americas, especially North America.
Nelson and her colleagues found that flu in pigs «follows long - distance swine movements from the southern U.S. to the Midwest,» with most of the human - origin H1N1 arriving at Midwest hog farms coming from the Southeast, and most of the swine - origin H1N2 coming from the south - central U.S. And that means the Midwest, as the final destination for many of these pigs, is «likely to provide a reservoir for multiple genetically distinct variants to co-circulate and exchange segments via re-assortment because of the continual importation
of swine influenza viruses from other regions,» the researchers noted.
The lines show the path
of swine influenza H1N2 along common hog routes over time.
Not exact matches
Great article and good to see common sense prevails in respect
of swine or any
influenza.
Ghana will today [Friday] take delivery
of the anti-viral agents Tamiflu from the World Health Organization, as part
of measures to combat the threat posed by the 2009 H1N1 strain
of influenza, also known as
swine flu.
About four students
of the school have died from the
Influenza H1N1 also known as
swine flu in the last two weeks.
The swelling circles represent the amount
of human - origin
influenza in
swine population, «with the viral populations increasing first in Oklahoma and then in Minnesota and Iowa,» as pigs move from the south - central to the Midwest.
«Understanding the importance
of long - distance pig transportation in the evolution and spatial dissemination
of the
influenza virus in
swine may inform future strategies for the surveillance and control
of influenza,» Nelson and her colleagues concluded in their paper.
Also, since the article was written, there has been significant progress on the implementation
of a national
influenza surveillance program in
swine.
There are a relatively limited number
of documented cases
of zoonotic [human - communicable]
swine influenza in the literature.
Noting the «relative lack
of surveillance for
swine influenza viruses,» the authors suggest, «this virus might have been circulating undetected among
swine herds somewhere in the world.»
The show includes reassortment
of the H1N1 / 2009
influenza virus in
swine, ocean noise, the physics
of old violins, and more.
The new study examined the effects
of three types
of influenza A — H1N1, the strain behind 2009's
swine flu outbreak; H7N7, a dangerous strain that only rarely infects people; and H3N2, the strain behind much
of the 2017 — 2018 flu season misery (SN: 2/17/18, p. 12).
«We found that the vaccines produced against the
swine flu pandemic in 2009 were very effective in both preventing
influenza infection and reducing the chances
of hospital admission due to flu.
«
Influenza viruses are always doing unpredictable and surprising things, although isolation
of this virus from turkeys may not be that surprising, because the
swine characteristics
of this virus — this may sound funny to say — can have the capacity to infect turkeys,» said CDC's Butler.
Novartis announced in a press statement today that it has made the first batch
of vaccine against the A (H1N1)
influenza virus causing the
swine flu pandemic.
Dr. Evans No we are saying that this particular virus based on what we are seeing clinical expression at this point and time, the introduction
of the virus into the pig herd, the pigs have responded in the same way that they have responded to every other
swine virus, or circulating
influenza virus.
Genetic analysis shows that the virus is a mix
of avian and
swine viruses from North America, a
swine flu strain usually seen in Asia, and a human
influenza strain.
Although the world's attention is focused on the novel H1N1 virus causing the
swine flu pandemic, H3N2, a seasonal strain
of influenza, has popped up in many East Asian countries — and some variants in circulation may outfox the seasonal vaccine in use.
One
of the most baffling features
of the
swine flu outbreak is that, unlike seasonal
influenza, severe disease largely does not occur in the elderly.
Question: And is this the first known case in the world
of the countries that are experiencing outbreak
of human
swine influenza where you've seen the flu infect a pig?
All
influenza viruses ultimately come from birds, and the paper begins the somewhat operatic and knotty story
of this outbreak's origins with an H1N1 first isolated in
swine in 1930, which itself was a close relative
of the virus that caused the 1918 pandemic in humans.
It's been well researched, by studies, by world organizations, by the Centre for Disease Control in Atlanta, other organizations that have all unanimously come to the conclusion that consumption
of pork is not a risk factor for transmission
of influenza virus from
swine to human.
Since December, an outbreak
of swine flu in India has killed more than 1,200 people, and a new MIT study suggests that the strain has acquired mutations that make it more dangerous than previously circulating strains
of H1N1
influenza.
And
of particular concern is the fact that pig cells are uniquely receptive to
influenza viruses from
swine, humans, and birds, making
swine a dangerous «mixing vessel» for new variants.
But a new report from Hong Kong, which conducts the world's most comprehensive surveillance
of influenza viruses in pigs, has described the first instance
of a
swine virus picking up a gene from the novel H1N1 circulating in humans.
Through a process called recombination, which had not previously been seen in
influenza viruses, parts
of the human and
swine virus genes had joined together to create a totally new antigen, one that human immune systems were unprepared for (Science, 11 May, p. 1041).
A baby from San Luis Potosí in north - central Mexico was likely infected with the 2009 H1N1
influenza virus on 24 February, making this the earliest case
of swine flu yet detected.
CDC researchers took ferrets never infected with an
influenza virus and injected them with this year's vaccine, which has an H1N1 component
of human, not
swine, origin.
Although SARS is his claim to fame, Guan has spent most
of his career studying
influenza after earning a Ph.D. in
swine flu under eminent flu expert Robert Webster
of St. Jude Children's Research Hospital in Memphis, Tennessee.
Pathogenicity and transmissibility
of North American triple reassortant
swine influenza A viruses in ferrets.
Protection
of mice against lethal challenge with 2009 H1N1
influenza A virus by 1918 - like and classical
swine H1N1 based vaccines
Diversity
of Influenza Viruses in
Swine and the Emergence
of a Novel Human Pandemic
Influenza A (H1N1)
To capture the early spatial patterns
of a newly emergent virus in
swine populations prior to extensive geographical mixing, this study focused on an H1
influenza virus that was introduced twice from humans into
swine around 2003.
Our collaborative
influenza projects: 1) characterizing the temporal and spatial evolutionary dynamics
of the IAV and IBV circulating globally in humans and wild birds, 2) identifying the IAV genotypes circulating in pigs at county fairs (
swine - human interface) to determine if fairs produce novel reassortants or enable zoonosis / reverse zoonosis, 3) determining if specific internal gene segment constellations enhance viral fitness, 4) detecting epistatic interactions between gene segments, and 5) assessing the impact
of inter-hemispheric migration
of viruses / gene segments.
He is working on the prediction and validation
of conserved T cell epitopes from prevalent
swine influenza viruses.
Added
swine flu concern There are even more questions to be answered this year, thanks to the outbreak
of the H1N1
influenza virus, commonly referred to as
swine flu.
Although respirator use made sense at the beginning
of the
swine flu pandemic, it now appears that H1N1 behaves similarly to seasonal
influenza, Dr. Rupp says, so «it does nt make much sense to be using different precautions for seasonal flu than we use for H1N1.»
Kitikoon P, Nilubol D, Vincent A, Yu S, Erickson B, Janke B, Hoover T, Sornsen S, Thacker E. Immune response and effect
of maternal antibody interference on vaccination with a bivalent
swine influenza vaccine.
The dominant share
of this segment can be attributed to the increasing porcine population, growing awareness about animal vaccination, and outbreaks
of porcine diseases such as PRRS (Porcine Reproductive & Respiratory Syndrome),
swine influenza, and Auzeszkys Disease (AD).
H1N1 Gamma, H1N2 Delta - 1, H3N2 Cluster - IV - A and H3N2 Cluster - IV - B are some
of the most prevalent strains
of influenza A virus in
swine (IAV - S) that can impact U.S. farms today.
Optimal use
of vaccines for control
of influenza A virus in
swine.
The report «Veterinary / Animal Vaccines Market Type (Porcine, Poultry, Companion Animal, Aquaculture), Disease (Porcine Parvovirus,
Swine Pneumonia, Avian
Influenza, Rabies, Clostridial Diseases), Technology (Inactivated, Toxoid, Recombinant)- Global Forecast to 2022», The global veterinary vaccines market is expected to reach USD 8.66 Billion by 2022 from USD 6.50 Billion in 2017, at a CAGR
of 5.9 % during the forecast period (2017 - 2022).
Well, people were already pretty scared
of the recent
swine flu outbreaks in 2009 and vets and vaccine manufacturers were eager to prey on pet owners» fears and cash in when canine
influenza (dog flu) hit at the same time.
The researchers themselves even recognize the link between vaccines and disease, saying that «Cases
of GBS after rabies and
swine influenza vaccines also have been reported.»
This information provides only a small look at some
of the advantages and results you'll see from a vaccine that offers cross-protection against different
swine influenza strains.
(21) Dr Ronald Schultz is quoted in Vet Med Today: «Immune - mediated disease has developed in human beings following vaccination, as was seen with cases
of Guillain - Barre syndrome following
swine flu vaccinations, and rheumatoid arthritis following
influenza vaccination».
Commenting on the current developments regarding the
swine influenza outbreak, Dr. Ghassan Aïdi, President
of the International Hotel & Restaurant Association «IH&RA» informs on the importance
of the safety and well - being
of the hospitality industry and confirms that the IH&RA is working closely together with the Tourism Emergency Response Network «TERN» partners, the United Nation World Tourism Organization «UNWTO», the World Health Organization «WHO» and sharing views on the matter on continuous basis.