A Class I falls in the "drop everything and listen up" category.

This classification is used when the FDA finds a reasonable chance that exposure could cause serious harm or death.

Nationwide recall affects hundreds of bags of cake and bread mixes containing undeclared milk that could trigger life-threatening reactions in allergic individuals.

Hundreds of bags of cake mix pulled last year were bumped up to the U.S. Food and Drug Administration’s most high-risk recall ...

A recall involving multiple cake mix products has been upgraded to the most serious risk category issued by the US Food and ...

B.C. Williams Bakery Service, Inc. initiated a voluntary recall of its spice cake, Swiss chocolate cake and bread roll mixes because the products may contain an undeclared allergen.

Cake mix recall elevated to highest FDA danger level due to ‘death’ risks - It is not clear where the affected cake mixes were distributed ...

The Food and Drug Administration has elevated a cake mix recall to Class I—the most serious level—after undeclared milk allergens were found in products distributed nationwide by B.C. Williams Bakery ...