new vaccine 9.22   They have a new vaccine out.
  experimental vaccine 4.94   What saved the monkeys was an experimental vaccine.
  effective vaccine 3.95   No effective vaccine is available.
  oral vaccine 3.88   Another round of oral vaccines will be given in March.
  current vaccine 1.91   The current vaccine is not very effective.
  first vaccine 1.58   It would be the first vaccine for the bug.
  such vaccine 1.51   Q. Would such a vaccine be given to everyone?
  available vaccine 1.45   Vaccine available.
  human vaccine 1.05   It is the first human vaccine against the disease.
  live vaccine 1.05   Live attenuated vaccines have a long and illustrious history.
  possible vaccine 0.99   Possible new vaccine fights malaria throughout its life cycle.
  animal vaccine 0.92   The strain has been used for decades to make animal vaccine, experts said.
  american vaccine 0.86   The British vaccine is similar to the American vaccine.
  engineered vaccine 0.86   The combination strategy uses two genetically engineered vaccines.
  standard vaccine 0.79   Standard vaccines are made from killed virus.
  successful vaccine 0.79   It grew well in eggs, a key to producing a successful vaccine.
  traditional vaccine 0.79   Biodegradable polymers may be applied to traditional vaccines.
  better vaccine 0.72   Lehmann hopes his work will lead to better vaccines.
  developing vaccine 0.72   And several research groups are developing vaccines that have already worked in mice.
  different vaccine 0.72   Two different vaccines for Lyme are currently being tested.
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