Læknablaðið - 01.12.1978, Síða 24

178
LÆKNABLAÐIÐ
Figure 3. NOTIFIED CASES OF EARLY
SYPHILIS, 1950—1970. Percentage variation in
the annual rate per 100.000 population, by
comparison with 1950, which is taícen as 100%,
except where indicated. (from The inter-
country spread of veneral diseases, WHO,
Copenhagen, 19721*1.
A
1
DONOR I 197S
<±T
í t <5 5
$ §
5 i
Figure 4. „Pedigree“ showing contact tracing
in connection with three VDRL positive blood
donors (1, 1975; II, 1975; and III, 1976).
Black circles: infected;
Empty circles: assumed infeated, but seronega-
tive.
n
• ' SYPHILIS
O ' SERONEGATIVE
YZ3
k
DONOR III 1976
DONOR II 1975
1)