Abstract:
:Susceptible dairy cattle were immunized with attenuated, live calf-derived, in vitro-cultured or biologically cloned Babesia bovis, with non-viable exoantigens, or with recombinant rhoptry-associated protein 1 (rRAP1). Antibody response assessed by the indirect fluorescent assay (IFA) and by the growth inhibition activity in vitro showed that seroconversion correlated with neutralization activity in vitro in all immunized groups, but not with protective immunity in vivo. The protective responses elicited by immunization with completely avirulent biologically cloned live parasites, or by the exoantigens were sufficient for highly susceptible dairy cattle, in which prime immunization with blood-derived attenuated parasites cause clinical babesiosis. Upon challenge with virulent live parasites all immunized calves were solidly protected, but only partial protective immunity was acquired by rRAP1 immunization.
journal_name
Vaccinejournal_title
Vaccineauthors
Fish L,Leibovich B,Krigel Y,McElwain T,Shkap Vdoi
10.1016/j.vaccine.2008.09.070subject
Has Abstractpub_date
2008-12-19 00:00:00pages
G29-33eissn
0264-410Xissn
1873-2518pii
S0264-410X(08)01349-2journal_volume
26 Suppl 6pub_type
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