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attenuated vaccine

   Also found in: Dictionary/thesaurus, Medical, Wikipedia, Hutchinson 0.03 sec.
attenuated vaccine [ə′ten·yə‚wād·əd ‚vak′sēn]
(immunology)
A suspension of weakened bacteria, viruses, or fractions thereof used to produce active immunity.


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Subsequent studies performed in children found no significant difference in shedding of attenuated vaccine strains in patients who had recovered from previous infection with a vaccine or natural strain of a different subtype than did study participants who had no evidence of previous virus exposure (15,16).
The major advantage is that vaccines generated using this delivery system are much safer than live attenuated vaccines and very cost effective for mass administration," Lamb said.
Nevertheless, some scientists haven't given up on a live attenuated vaccine.
 
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