avian strain in a sentence
1) Intensive farming may be creating highly virulent avian flu strains .
2) The H 7N9 avian flu strain has also reappeared in China with cases of human-to-human transmission reported.
avian collocations
3) In contrast, when influenza viruses reassort, they acquire completely new antigens–for example by reassortment between avian strains and human strains; this is called antigenic shift.
4) An avian strain named H5N1 raised the concern of a new influenza pandemic after it emerged in Asia in the 1990s, but it has not evolved to a form that spreads easily between people.
avian strain example sentences
5) The precise nature and extent of the genetic alterations that might change one of the currently circulating avian influenza strains into a human flu strain cannot be known in advance.6) When it first killed humans in Asia in the 1990s, a deadly avian strain of H5N1 posed a great risk for a new influenza pandemic; however, this virus did not mutate to spread easily between people.
7) Around 1979, the avian H1N1 strain infected pigs and gave rise to Euroasiatic swine flu and H1N1 Euroasiatic swine virus, which is still being transmitted in swine populations.
8) New events of reassortment were not reported until 1968, when the avian strain H1N1 infected humans again; this time the virus met the strain H2N2, and the reassortment originated the strain H3N2.
9) We have examined sequences from the 1918 strain, which is the only pandemic influenza virus that could be entirely derived from avian strains .
10) The use of an avian strain confirmed the proposed topology of the genotypes 1–4 and suggested that the genus may have evolved (range to ).
11) " Scientists and public health officials have been sounding the alarm for years about the potential that the avian flu strain called H5N1 could become a major threat to humans.
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