(2 of 2)
From frequent blood samples, the WHO team was able to report that no antibodies developed as a result of vaccination until the 19th day. Since 18 days is often enough time for the deadly rabies virus to make its way to the brain, the lesson of the Sahneh experiment was laid out with textbook neatness: the serum, with the readymade antibodies that it introduces into the system, can be a lifesaver. "This terrible disease," concluded the British Medical Journal this month, "is preventable by well-directed and vigorous measures."