Prions cover

Reading Metrics

Grade Level Middle Grades Plus (MG+ 6 and up)
Book Level 3.7
Points 0.5
Fiction/Nonfiction Nonfiction
Word Count 3554
Points per Word 0.000141
Page Count 52
Points per Page 0.009615

Description

Cows shake uncontrollably and later die. Sheep scratch at their fur until only patches are left. People laugh one minute and become violent the next. These are all signs of brain diseases caused by prions.