One of McDonald’s most popular menu items is about to get spicier — at least in some cities.

One of McDonald’s most popular menu items is about to get spicier — at least in some cities.

Goodbye McDonald’s Halloween Boo Buckets, hello new Happy Meal toys.

A proposed class action lawsuit was filed Tuesday against McDonald’s, the latest litigation over the E. coli outbreak linked to the fast-food chain’s Quarter Pounders.

The CDC believes the risk to the public is “very low” due to the actions taken by McDonald’s and Taylor Farms to remove slivered onions from affected locations.

Fresh, slivered onions on the restaurant chain’s Quarter Pounders “are the likely source” of the outbreak, the agency said Wednesday.

The outbreak isn’t expected to have a material impact on McDonald’s business, CFO Ian Borden said.

Shares of McDonald’s have fallen 6% since its Quarter Pounder burgers were linked to a deadly E. coli outbreak.

The Colorado Department of Agriculture’s testing did not detect E. coli in samples of the beef patties taken from McDonald’s restaurants in the area.

McDonald’s provided an update on a multistate E. coli outbreak on Sunday, saying tests have determined Quarter Pounder beef patties aren’t behind the outbreak, and the product will return to affected restaurants in the coming week.