Eucestoda the "broad tapeworm" or "fish tapeworm") and related species. Humans become infected by eating raw, undercooked, or marinated fish acting as a second intermediate or paratenic host harboring metacestodes or plerocercoid larvae. Clinical symptoms are due to the large size of the tapeworm, which often reaches a length exceeding 15 m. The most common symptom is pernicious anemia, caused by the absorption of vitamin B12 by the worm. Other symptoms include various intestinal issues, slight leukocytosis, and eosinophilia. This condition is caused by the plerocercoid larvae of the tapeworm "Spirometra". Humans become infected by drinking contaminated water, eating raw or
Electrical disruptions caused by squirrels Electrical disruptions caused by squirrels Electrical disruptions caused by squirrels are common and widespread, and can involve the disruption of power grids. It has been hypothesized that the threat to the internet, infrastructure and services posed by squirrels may exceed that posed by terrorists. Although many commentators have highlighted the lighter side of the concern, squirrels have proven consistently able to cripple power grids in the U.S. and other countries. While some commentators emphasize the humorous aspect, they still imply that the danger posed to the electrical grid from squirrels is ongoing and concerning. Instances of power grid shutdowns caused