Polio Vaccine I I Effect Limited DC IR H 11 D. D U During 1950 1956 Polio vaccine was wn made available for use uSI on JIl a n mass scale All AM over the United States State s vaccination clinics were werl sit pl s H up lip and ami many hundreds of thousands we were rl given recommended ni With the advent of the vaccine vic vac ein cine many rash claims were made marle regarding its it's effective effective- nes I iff Tim immunity Protection Against Paralytic Polio Polio t At th the e time of the Davis Divis County Clinics held at al Bountiful High Davis High and North Junior High your health de department de- de urged uS use of the vaccine by hy everyone to age forty but called attention to the fact the vaccine was wis so new nothing was known re re- guiding alding the length of effective effective tive Immunity conferred d. d Attention Attention At At- Attention was called to other virus vaccines centering immunity immunity im im- for limited periods only and that we better think in similar terms regarding j polio vaccine and take tate two chats hols each year In May April or June t to I maintain an effective ef ef- effective blood of oI nits Our deductions are arC proving provo ing correct Polio we wf know occurred in cycles The period peri period pert pert- od ad of oI an active cycle eycle occurred occurred occur occur- red rd in Detroit this fall all with witha a recent report of some active cases large age paralytic and goodly percentage percentage percentage per per- fatal Detroit had just an active an immunization a- a tion program as elsewhere showing the limited period of effe effectiveness of the vaccine Two shots annually will conIer confer confer con con- fer Ier a far greater great effectiveness the disease I Health is natures nature's greatest gift to man man man-I Preserve man Preserve reserve U it ill