Question: Which of the animal is a carrier of h1n1?

Disambiguated questions and answers:
context: The 1918 flu pandemic in humans was associated with H1N1 and influenza appearing in pigs; this may reflect a zoonosis either from swine to humans, or from humans to swine. Although it is not certain in which direction the virus was transferred, some evidence suggests, in this case, pigs caught the disease from humans. For instance, swine influenza was only noted as a new disease of pigs in 1918, after the first large outbreaks of influenza amongst people. Although a recent phylogenetic analysis of more recent strains of influenza in humans, birds, animals, and many others and swine suggests the 1918 outbreak in humans followed a reassortment event within a mammal, the exact origin of the 1918 strain remains elusive. It is estimated that anywhere from 50 to 100 million people were killed worldwide.
question: Which of the four-legged animal is a carrier of h1n1?
short_answers: swine
pigs
wikipage: Swine influenza
context: The 1918 flu pandemic in humans was associated with H1N1 and influenza appearing in pigs; this may reflect a zoonosis either from swine to humans, or from humans to swine. Although it is not certain in which direction the virus was transferred, some evidence suggests, in this case, pigs caught the disease from humans. For instance, swine influenza was only noted as a new disease of pigs in 1918, after the first large outbreaks of influenza amongst people. Although a recent phylogenetic analysis of more recent strains of influenza in humans, birds, animals, and many others and swine suggests the 1918 outbreak in humans followed a reassortment event within a mammal, the exact origin of the 1918 strain remains elusive. It is estimated that anywhere from 50 to 100 million people were killed worldwide.
question: Which of the flying animal is a carrier of h1n1?
short_answers: birds
bird
wikipage: Swine influenza

Long-form answers:
knowledge: content: Swine influenza virus (SIV) or swine-origin influenza virus (S-OIV) is any strain of the influenza family of viruses that is endemic in pigs.[2]
wikipage: Swine influenza
content: Avian influenza, known informally as avian flu or bird flu, is a variety of influenza caused by viruses adapted to birds.[1][2][3][4][5][note 1][6]
wikipage: Avian influenza
content: Other strains of H1N1 are endemic in pigs (swine influenza) and in birds (avian influenza).
wikipage: Influenza A virus subtype H1N1
long_answer: The 1918 flu pandemic in humans was associated with H1N1 and influenza appearing in pigs. Swine influenza, any strain of the influenza family of viruses that is endemic in pigs, was only noted as a new disease of pigs in 1918, after the first large outbreaks of influenza amongst people. origin of the 1918 strain remains elusive. Avian influenza, known informally as avian flu or bird flu, is a variety of influenza caused by viruses adapted to birds. Some strains of H1N1 are endemic in birds.
knowledge: content: 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 2009 swine flu pandemic, the 1977 Russian flu pandemic as well as the 1918 flu pandemic.
wikipage: Influenza A virus subtype H1N1
long_answer: 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 2009 swine flu pandemic, the 1977 Russian flu pandemic as well as the 1918 flu pandemic. The 1918 flu pandemic in humans was associated with H1N1 and influenza appearing in pigs; this may reflect a zoonosis either from swine to humans, or from humans to swine. Although it is not certain in which direction the virus was transferred, some evidence suggests, in this case, pigs caught the disease from humans. Although a recent phylogenetic analysis of more recent strains of H1N1 in humans, birds, animals, and many others and swine suggests the 1918 outbreak in humans followed a reassortment event within a mammal, the exact origin of the 1918 strain remains elusive.