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Show Paralytic polio doubled last year does this mean the Salk vaccine has failed? And what about the new oral vaccines? What can they do, and what's holding them up? Here are direct answers from the experts involved By LIN ROOT ... a ' v. I -IIJ, y;1. t- ...... r-- o - - - . ' T I " v , s i . ,1, V. t 1 i I- - Hi-- i ' ' ' 2, . v" - - ' - - ' . I".. Despite increase in paralytic polio, experts have confidence in Salk vaccine, injected into (killed-viru- s) bod. Developers of Live Virus Vaccine Describe Its Advantages -- There are three live-vir- us vaccines oped by Drs. Herald Cox, Hilary and Albert Sabin. Each doctor e has his reasons for corisidering'his best, but all subscribe to the general principles of theory. Millions of persons in the U.S.S.R., Poland, the Belgian Congo, and Latin Ko-prow- vac-cin- live-vir- Dr. Herald R.Cox us ski America have taken these vaccines in mass trials. Trials also are being conducted in several U.S. citiesr-MiaPaul. InterCincinnati, Minneapolis-S- t national experts will be evaluating the results in polio, conferences.this year. Meanwhile, here is what the men who developed the say They blame public for not using it more extensively. s Q. How live" is polio vaccine? . A- Completely live but attenuated (weakened) in live-vim- such a way that it has lost the power tp pro- -. duce polio but kept the power to make the blood manufacture antibodies. These chemicals protect a person from catching the natural '' " . 4wild" polio virus. . . mi, live-virus-vacc- Q. Why do you think than ine Dr. live-viru- s Albert B. Sabin killed-viru- s us Just how does it provide immunity? X vaccine is better vaccine? 2'i. j polio-virvaccine is easier to give, and easier to take. It can be swallowed in a spoon-- ful of syrup or mixecLintothe..babyls formula.. It is much cheaper to manufacture; it provides longer-lastin- g immunity; it immunizes a higher percentage 'of the population; it protects the community as well as the individual. A. Live about it: Dr. Hilary Koprowski . . Q. f ' longer-lastin- g A. A. When you swallow, . - y - the weakened virus multiplies in your intestines. You get no symptoms, but your body manufactures antibodies which give you a continu- -, ing immunity. That's the way, you get natural ; immunity in childhood from wild virus. Only live-vir- us vaccine, . , ' ML I LVa - ' ; , Family Weekly, July 3, I960 . (Continued) . ' |