Langmuir, A.D.: Inactivated virus vaccines: Protective efficacy in poliomyelitis. In Fifth International Conference on Poliomyelitis. Philadelphia, J. B. Lippincott Co., pp. 105-114, 1961.
3.
Salk, J.E.: Persistence of immunity following administration of formalin-treated poliovirus vaccine. Ibid., pp. 157-175.
4.
Batson, R., Christie, A., Cheatham, W.J., Michal, M.L. and Sleight, G.W.: Antibody response and survival following booster injections of poliomyelitis (killed-virus) vaccine. Pediatrics29: 116, 1962.
5.
Lepow, M.L. , Carver, P.H. and Robbins, F.C.: Serologic response of non-immune subjects to commercial Salk vaccine response and antibody persistence with four doses . Amer. J. Dis. Child.103: 803, 1962.
6.
Warren, R.J. and Robbins, F.C.: Prevention of viral diseases. Pediatrics30: 862, 1962.
7.
Perkins, F.T. , Yetts, R. and Gaisford, W.: A comparison of the response of 100 infants to primary poliomyelitis immunization with two and with three doses of vaccine . Brit. Med. J.1: 1083, 1959.
8.
Brown, G.C. and Kendrick, P.L.: Serologic response of infants to a multiple vaccine for simultaneous immunization against diptheria, pertussis, tetanus and poliomyelitis, in relation to the presence of specific maternal antibody. Amer. J. Public Health.50: 1529, 1960.
9.
Barrett, C.D. , Jr., Mclean, I.W., Jr., Molner, J.G., Timm, E.A. and Weiss, C.F.: Multiple antigen immunization of infants against poliomyelitis, diptheria, pertussis and tetanus. Pediatrics30: 720, 1962.
10.
Hilleman, M.R. , Charney, J., Tytell, A.A., Weihl, C., Cornfeld, D., Ichter, J.T., Riley, N.D., Jr. and Huang , N.: Progress in the Development of a Purified Poliomyelitis Vaccine, in Fifth International Conference on Poliomyelitis. Philadelphia, J. B. Lippincott Co., pp. 200-209, 1961.
11.
Fantes, K.H. : Concentration and partial purification of poliomyelitis viruses. J. Hyg.60: 123, 1962.
12.
Gard, S.: Exit Poliomyelitis—What Next? in "Virology and Epidemiology." Ed. by D. M. Horstmann, Hamden, Conn.Archon. pp. 117-128, 1961.
13.
Dane, D.S., Dick, G.W.A., Simpson, D.I.H., Briggs, E.M., Mcalister, J., Nelson, R. and Field, C.M.B.: New quadruple vaccine. Lancet1: 939, 1962.
14.
Marine, W.M. , Chin, T.D. and Gravelle, C.R.: Limitation of fecal and pharyngeal poliovirus excretion in Salk-vaccinated children. Am. J. Hyg.76: 173, 1962.
15.
Gelfand, H.M. , Leblanc, D.R., Potash, L. and Fox, J.P.: Studies on the development of natural immunity to poliomyelitis in Louisiana IV natural infections with polioviruses following immunization with a formalin-inactivated vaccine. Amer. J. Hyg.70: 312, 1959.
16.
Plotkin, S.A. , Koprowski, H., Richardson, S.M. and Stokes, J., Jr.: Vaccination of families against poliomyelitis by feeding and by contact spread of living attenuated virus, including studies of virus properties after human intestinal passage. Acta Peadiatrica49: 551, 1960.
17.
Howe, H.A.: Day by day response of vaccinated chimpanzees to poliomyelitis infection. Am. J. Pub. Health47: 871, 1957.
18.
Gelfand, H.M. , Potash, L., Lebanc, D.R. and Fox, J.P.: Intrafamilial and interfamilial spread of living vaccine strains of polioviruses. J. A. M. A.170: 3029, 1959.
19.
Plotkin, S.A. , Koprowski, H. and Stokes, J., Jr.: Clinical trials in infants of orally administered attenuated poliomyelitis viruses. Pediatrics23: 1041, 1959.
20.
Lepow, M.L. , Warren, R.J., Gray, N., Ingram, V.G. and Robbins, F.C.: Effect of Sabin type I poliomyelitis vaccine administered by mouth to newborn infants. New Eng. J. Med.264: 1071, 1961.
21.
Pagano, J.S. , Plotkin, S.A. and Koprowski , H.: Variation in the responses of infants to living attenuated poliovirus vaccines. New Eng. J. Med.264: 155, 1961.
22.
Buser, F., Dostal, V., Barandun, S., Haenzel, J. and Witschi, H.P.: Immunological Problems of the Vaccination of Newborn and Very Young Infants with Live Avirulent Poliovirus. European Association against Poliomyelitis and Allied Diseases VIIth Symposium, Oxford, pp. 362-367, 1961.
23.
Kleinman, H., Barr, R.N., Bauer, H., Kimball, A.C., Cooney, M.R., Bearman, J.E. and Mathey, W.E.: Further Experiences with Oral Poliomyelitis Vaccines in Minnesota. In Live Poliovirus Vaccines, Second Int. Conf. Pan Amer. Health Organization, Washington, Sept. 1963, 341.
24.
Horstmann, D.M., Paul, J.R., Godenne-Mccrea , M., Green, R.M., Opton, E.M., Holtz, A.I. and Niederman, J.C.: Immunization with oral poliovirus vaccine (Sabin). J. A. M. A.178: 693-701, 1961.
25.
Melnick, J.L. , Benyesh-Melnick, M. and Brennan, J.T.: Studies on live poliovirus vaccine. J. A. M. A.171: 1155, 1959.
26.
Plotkin, S.A. : The polioviruses of man. Ann. N. Y. Acad. Sci.101, 357, 1962.
27.
Koprowski, H., Jervis, G.A. and Norton, T.W.: Immune responses in human volunteers upon oral administration of a rodent-adapted strain of poliomyelitis virus. Am. J. Hyg.55: 108, 1952.
28.
Koprowski, H.: Tin anniv. of develop. of live virus vaccine . J. A. M. A.173: 972, 1960.
29.
Paul, J.R., Riordan, J.T. and Melnick, J.L.: Antibodies of three different antigenic types of poliomyelitis in sera from North Alaskan eskimos. Am. J. Hyg.54: 275, 1951.
30.
Yafe, J., Goldblum, N., Eylan, E. and Melnick, J.L.: An outbreak of poliomyelitis in Israel in 1961 and the use of attenuated Type 1 vaccine in its control. Am. J. Hyg.76: 225, 1962.
31.
Sabin, A.B. : Oral poliovirus vaccine: Recent results and recommendations for optimum use. Roy. Soc. Health, J., 82: 51, 1962.
32.
Pagano, J.S. , Plotkin, S.A., Janowsky, C.G., Richardson, S.M. and Koprowski , H.: Routine immunization with orally administered attenuated poliovirus: A study of 850 children in an American city. J. A. M. A.173: 1183, 1960 .
33.
Melnick, J.L. , Proctor, R., Ocampo, A.R., Diwan, A.R. and Ben-Porath , E.: Viremia after administration of live poliovirus vaccine. Bact. Proc.4: 145, 1961.
34.
Communicable Disease Center Poliomyelitis Surveillance Unit Report No. 273, Dec. 21, 1962.
35.
Communicable Disease Center Poliomyelitis Surveillance Unit Report No. 271, Nov. 13, 1962.
36.
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37.
Welnick, J.L. and Benyesh-Melnick , M.: Problems Associated with Live Poliovirus Vaccine and Its Progeny After Multiplication in Man. In Live Poliovirus Vaccines Second Intern. Conf. Pan Am. Health Organization, Washington, Sept. 12, 1960.
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Plotkin, S.A. , Norton, T.W., Cohen, B.J. and Koprowski , H.: A Type 3 attenuated poliovirus genetically stable after human intestinal passage. Proc. Soc. Exptl. Biol. Med.107: 829, 1961.
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