Adult tapeworm preserved in formalin
Table of Contents
Taenia saginata is the beef tapeworm, a worldwide distribution in countries where cattle are raised and beef is eaten. Taenia solium is the pork tapeworm and it is not as widely distributed as T. saginata. It occurs mainly in Southern Africa, China, India and Central America. Both tapeworms live in the small intestine (upper jejunum) of man. These tapeworms use humans as its definitive host while pigs/beef as the intermediate or secondary hosts.
The differences between Taenia solium and Taenia saginata are as follows-
| Characters | Taenia solium | Taenia saginata |
| Common name | Pork tapeworm | Beef tapeworm |
| Length | 2-3 meters | 5-10 meters |
| Proglottids (gravid segments) | 800-900 | 1000-2000 |
| Scolex (head) | with hooklets | without hooklets |
| Vagina | vaginal sphincter absent | vaginal sphincter present |
| Ovaries | 2 in number, with an accessory lobe | 2 in number, without any accessory lobe |
| Egg | Acid-fast embryophore of egg | Non-acid fast embryophore of egg |
| Intermediate host | Pig | beef |
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