LIVE POLIO IRUS VACCINES

Vaccination with Attenuated Polioviruses in Costa Rica 563
program were supplied by the Lederle Laboratories,
American Cyanamid - Company, Pearl
River, N. Y., U.S.A. The monovalent vaccine
of poliovirus Types 1 and 3 contained approximately
106'1 TCD,, 0 and the Type 2 from 105'8
to 106'2 TCD 5 o per 0.7 ml. dose. The trivalent
vaccine had a concentration of 106.2 TCDs 0 of
each poliovirus type per 2 ml. dose. The bivalent
Type 2 and 3 vaccine and the monovalent Type 1
used for the newborn infants contained 106-o
TCDso per 1.0 ml. dose.
Distribution of the vaccinees geographically
TABLE 2.
ORAL VACCINATION AGAINST POLIOMYELITIS IN COSTA RICA-
17 MARCH 1959 to 15 APRIL 1960
ESTIMATED
POPULATION
< 11 YEARS
AS OF
31-12-59
CHILDREN VACCINATED
VACCINE
LOCALITY
MONOVALENT*
TRIVALENT
TOTAL
TOTAL POP.
382,905
122,552 149,079 271,631 t
71
PROVINCES:
SAN JOSE
(METROP. AREA)
ALAJUELA
CARTAGO
HEREDIA
GUANACASTE
PUNTARENAS
LIMON
122,792
(74,286)
75,670
49,818
22,248
50,123
44,745
17,509
68,875 42,067 110,942
(66,336) (6,798) (73,134) t
25,123 24,446 49,569
12,814 14,600 27,414
3,752 11,088 14,840
_- 26,854 26,854
7,724 20,335 28,059
4,264 9,689 13,953
89
(98)
66
55
67
54
63
80
* Each type one month apart.
t Including 2,225 newborns who received bivalent Types 2 and 3 vaccine, followed by Type 1 one month
later.
* Figures revised by Dept. Biostatistics, already included in the province of San José.
TABLE 3.
DISTRIBUTION OF COSTA RICAN CHILDREN UNDER 11 YEARS BY AGE, IMMUNITY, AND
VACCINATION STATUS-1959-60
AGE
(YRS.)
ESTIMATED
NUMBER IN
POPULATION
AS OF
31-XII-1959
VACCINATED
No.
TESTED
BEFORE
VACC.
1
% SERONEGATIVES BY TYPE
2
3