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Vaccine efficacy of RRPs. Mice were either left unvaccinated (n = 9; mock) or vaccinated (n = 10) either once (1×) or twice (2×) via the intramuscular route (IM) or subcutaneous route (SC) with 106 TCID50 of RRPs. Mice were challenged with a known lethal dose of RVFV strain 35/74 via the intraperitoneal route. The mortality rates were determined until 21 days postchallenge (d.p.c.).
