Abstract:
:The greatest risk from live-attenuated vaccines is reversion to virulence. Particular concerns arise for RNA viruses, which exhibit high mutation frequencies. We examined the stability of 3 attenuation strategies for the alphavirus, Venezuelan equine encephalitis virus (VEEV): a traditional, point mutation-dependent attenuation approach exemplified by TC-83; a rationally designed, targeted-mutation approach represented by V3526; and a chimeric vaccine, SIN/TC/ZPC. Our findings suggest that the chimeric strain combines the initial attenuation of TC-83 with the greater phenotypic stability of V3526, highlighting the importance of the both initial attenuation and stability for live-attenuated vaccines.
journal_name
Vaccinejournal_title
Vaccineauthors
Kenney JL,Volk SM,Pandya J,Wang E,Liang X,Weaver SCdoi
10.1016/j.vaccine.2011.01.055subject
Has Abstractpub_date
2011-03-09 00:00:00pages
2230-4issue
12eissn
0264-410Xissn
1873-2518pii
S0264-410X(11)00106-Xjournal_volume
29pub_type
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