Exact(6)
Indeed PROSTVAC employs two different viral vectors, upon priming with the recombinant vaccinia virus expressing PSA, neutralizing antibodies are formed to the vector, making subsequent boosting doses unfeasible.
Boosting doses included 2×103 CFUs of LVS, 1×106 CFUs of Schu S4 ΔpurMCD, or 1×106 CFUs of LVS ΔpurMCD.
In addition, VLPs have demonstrated a loss of efficiency on boosting doses due to the generation of neutralizing antibodies against capsid proteins [ 82].
In order to minimize the circulation of activated T cells that is likely to occur with repeated boosting doses, we adopted an effective vaccination regimen of a single s.c. inoculation 600 × 10 γ-spz (Table 1).
The important finding that all biomarkers (IL-8, TNF-α, IFN-γ, IL-17a, IL-4 and IL-10) returned to baseline after one year post vaccination re-enforced the need of boosting doses.
Previous phases I and II studies were performed with radiotherapy doses of 42 50.4 Gy and sometimes used boosting doses to achieve local control (Blackstock et al, 1999; McGinn et al, 2001; Brunner et al, 2003; Okusaka et al, 2004; Magnino et al, 2005).
Similar(54)
Immunizations took place at week 0, 4, 12 and the boosting dose is planned at week 36.
Secondary immune responses were assessed after the administration of an immunizing dose (5×104 pfu) of virus and a boosting dose (106 pfu) of virus.
In an early human trial volunteers were primed with NYVAC-Pf7, a viral vector expressing seven P. falciparum genes including the Pfs25 gene, followed by a boosting dose with a recombinant Pfs25 protein [4].
However, boosting dose to the tissues surrounding the lungs is technically difficult.
After the boosting dose, the VN titers were still undetected in most mice vaccinated with bivalent vaccine alone.
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