Agriculture Reference
In-Depth Information
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Figure 9.11
Life cycle of T. saginata/T. solium (Courtesy of Prof. A.J. Trees).
in South and Central America, India, Africa and parts
of the Far East, apart from areas where there are reli-
gious sanctions on the eating of pork. The condition
is now very uncommon in most developed countries
(Fig. 9.11).
Taenia saginata
,
C. bovis
- beef tapeworm, 'beef
measles. The condition is present worldwide, parti-
cularly important in Africa and South America.
Prevalence studies within the EU vary from 0.01% in
Italy, 0.02% in Germany and 0.22% in Belgium (EFSA,
2010). The adult tapeworm is found only in humans
and is 5-15 cm in length. An infected human can pass
million of eggs daily.
After ingestion, the ova hatch to form oncospheres
which travel via the blood to striated muscles. It is first
grossly visible about 2 weeks later as a pale, semi-
transparent spot about 1.0 mm in diameter, but it is not
infective to man until about 12 weeks later when it
