Once an individual has been fully protected annual single booster injections are necessary to maintain protection. (britvet.com)
Featured cards and single booster cards can be purchased with Blood Diamonds, booster packs with Blood Gems or Blood Diamonds, and a «light» pack with Blood Pearls. (thatvideogameblog.com)
Someone who has had three prophylactic rabies jabs, which take 28 days, only needs a single booster after being bitten, and can wait if necessary until they get home to ensure that the product is safe. (newscientist.com)