The simple fact is: That an experimental method for inducing measurable amounts of antibody for the three known poliomyelitis viruses, employing a killed-virus vaccine is available, and it now becomes possible to determine whether—and to what extent—the incidence of naturally occurring paralysis may be influenced.
All that should be inferred now is that studies are progressing satisfactorily; there have been no set-backs nor anything but revelations that shed more light on the course ahead. We must continue to regard the experimental developments to date as providing immunologic markers along the way that tell us whether we are on the right road. That there is more to do now than before indicates that we have not stumbled down a by-way but have selected a road, with many lanes, that seems long indeed. Our problem is to select not only the fast lane but the one that is safest and most certain.
Life in the fast lane: Temperature, density and host species impact survival and growth of the fish ectoparasite Argulus foliaceus
