LIVE POLIO IRUS VACCINES

422
Efficacy-Field Evidence
taneous mass immunization with trivalent live
vaccine during a period of steep rise in poliomyelitis
incidence in Tashkent in 1959, was
definite proof of the possibility of considerably
reducing poliomyelitis incidence within five
weeks, this being due to the effect of interference
by the vaccine virus with the epidemic process
and to progressive immunization of susceptible
population groups.
In conclusion, I should like to call attention
to the fruitful international cooperation in the
matter of live poliovirus vaccine, which has
existed between scientists of the U.S.A., the
Soviet Union, Czechoslovakia, Hungary, German
Democratic Republic, People's Republic of
China, Bulgaria, and other countries on the basis
of broad exchange of scientific information, personal
contacts, mutual exchange of results of
research work, and friendly support.
All that has been done heretofore is, undoubtedly,
only a promising start of regular future
international cooperation among medical scientists
towards the speediest eradication of certain
infectious diseases or, at least, sharp reduction
of their number.
TABLE 8. DATA ON LIVE POLIOVIRUS VACCINE DISTRIBUTION IN 1960
(January-May. inclusive)
REPUBLICS
TYPE 1
NUMBER OF DISTRIBUTED INOCULATION DOSES IN THOUSANDS
I I I
MONOVACCINES
INCLUDING
TRIVACCINE TOTAL FOR PRIMARY
TYPE 2 TYPE 3
VACCINATIONS
RSFSR
Ukrain. SSR
Kazakhstan
Uzbekistan
Byelorussia
Georgia
Azerbaijan
Moldavia
Lithuania
Latvia
Kirghiz SSR
Tajikistan
Armenia
Turkmenia
Estonia
39,407.3
12,080.6
2,294.0
3,176.0
3,000.0
1,500.0
1,404.0
600.0
750.0
610.0
800.0
750.0
550.0
882.0
67,819.9
34,657.5
9,206.3
200.0
3,000.0
30.0
773.6
902.0
48,769.4
37,610.4
9,466.6
200.0
2,976.0
772.0
800.0
51,825.0
4,409.8
6,454.6
3,502.7
4,406.0
1,699.2
1,557.0
900.0
2,000.0
452.4
1,102.0
1,102.2
928.0
898.0
29,411.9
116,085.0
37,208.1
5,796.7
7,982.0
8,976.0
3,199.2
2,991.0
1,500.0
2,750.0
2,608.0
1,902.0
1,852.2
1,702.0
1,478.0
1,780.0
___ ~ __ _ _/_
197,810.2
40,907.3
14,504.0
3,600.0
4,400.0
3,000.0
1,500.0
1,434.0
1,100.0
2,000.0
1,000.0
1,100.0
1,100.0
900.0
900.0
898.0
78,343.3
TABLE 9. REDUCTION OF PARALYTIC POLIOMYELITIS INCIDENCE IN Moscow IN THE SECOND HALF OF
1959 AMONG CHILDREN VACCINATED WITH LIVE VACCINE
GROUPS OF CHILDREN
UNDER 15 YEARS
OF AGE
NUMBER OF
CHILDREN
IN THOUS.
NUMBER OF
CASES
INDEX PER
100,000
RATIO OF
INDICES
Vaccinated 1,058 59 5.6
Unvaccinated 392 203 51.8
1:9.25