“…cattle, cats and young puppies, it appears safe for adult dogs and has been widely used in rabies eradication campaigns (see p. 551 above; Bulletin of the World Health Organization, 1954;Cabasso, 1966). Johnson (1954), quoting experiments by Koprowski & Black (1952), claimed that one dose of LEP vaccine gave a longer immunity in dogs than a single dose of phenolized brain vaccine. More recently, LEP vaccine has been shown to compare favourably with the newer attenuated and inactivated tissue culture vaccines and with suckling mouse brain vaccine (Sikes, 1971).…”