Abstract

References
1.Ministry of Health (1954 ) Annual Report for 1953 of the Chief Medical Officer.
H.M.S.O. , London.
2.
Bogdan
A.
(1951a ) Lancet , i , 764 .
3.
Bogdan
A.
(1951b ) Lancet , ii , 1204 .
4.
Bogdan
A.
(1951c ) Proc. R. Soc. Med. , 44 , 1065 .
5.
Bogdan
A.
(1952 ) Brit. med. J. , ii , 1186 .
6.
Bradford
W. L.
Slavin
B.
(1940 ) Proc. Soc. exp. Biol., N.Y. , 43 , 590 .
7.British Medical Journal (1953 ) Editorial , i , 769 .
8.
Kristensen
B.
(1933 ) J. Amer. med. Ass. , 101 , 204 .
9.
Lacey
B. W.
(1954 ) J. Hyg., Camb. , 52 , 18 .
10.Lancet (1951 ) Annotation , i , 783 .
11.Medical Research Council Pertussis Vaccine Trial (1951 ) Brit. med. J. , i , 1464 .
12.Medical Research Council Antibiotic Trial (1953 ) Lancet , i , 1109 .
13.
Nicholson
D. E.
Turner
G. C.
(1954 ) J. gen. Microbiol. , 10 , 1 .
