The E. coli virus linked to McDonald's Quarter Pounder burger has caused one death and dozens of sick people in the United States, mainly in the Colorado region.
Variant strain *E. coli* O157:H7, is expected to be the cause of the infection which is known for its severe pain.
The incident has affected the health of 49 individuals, with 10 of them hospitalized.
The reputation and share price of McDonald's, was also affected by seeing it go down by 6%.
The cause of the contamination remains under investigation, with sliced onions and fresh beef the focus of the investigation.
As a precaution, McDonald's has removed the ingredients from the affected stores and is working to resolve the issue.
The outbreak may have a long-term impact on consumer confidence and sales, similar to the E. coli outbreak that affected the Chipotle chain in 2015.
McDonald's has acted immediately, stopping the sale of the Quarter Pounder to investigate the real cause of the problem.
