Rabies post-exposure vaccines require multiple injections rather than a single dose

The claim is specific, empirical, and falsifiable regarding standard medical protocols for rabies post-exposure prophylaxis. Multiple retrieved papers, notably [4] and [6], explicitly state that standard human rabies vaccination protocols require multiple doses (e.g., three to four doses) and note that researchers are actively trying to develop a single-dose vaccine precisely because the current standard requires multiple visits and injections. Thus, the evidence clearly supports the claim.