Another case of damage has emerged concerning the recently controversial “hamburger disease.”

A family claimed their two-year-old child, who ate a McDonald’s hamburger in May, has been diagnosed with the same symptoms due to McDonald's underbaked patty in their burger and filed a complaint on Wednesday.

“My child has to receive dialysis every night,” said Choi Eun-ju, the mother of the victim. “I cannot tell you how long I have to keep this up."

A lawyer agreed. "Although complications did not occur, the initial progression is almost identical to the victim who filed the complaint on July 5," lawyer Hwang Da-yeon said.

In the past six years, 24 cases of “hemolytic uremic syndrome” (HUS), called the “hamburger disease,” have been found in Korea. More than 70 percent of the patients were under 10 years of age.

According to the Korea Centers for Disease Control and Prevention (KCDC), out of 443 patients diagnosed with Escherichia coli (E-coli) infections between 2011 and 2016, and 24 of them (5.4 percent) have developed into HUS. Among the 24 patients, 14 patients (58.3 percent) were 0-4 years old, and three (12.5 percent) were 5-9 years old.

E. Coli's symptoms include fever, diarrhea, stool, vomiting, severe cramps and abdominal pain that appear after two to 10 days.

KCDC said it did not find any records of signs of the first E. coli infection, the cause of “hamburger disease,” in the case of the first victim. However, the results of bacterial or viral tests may vary depending on the time of the test, it added.

“Although HUS is known as ‘hamburger disease,' it cannot be concluded that a hamburger is the only cause,” a KCDC official said. "Dairy products and vegetables contaminated with feces can also be the cause as well."

Prosecutors said they would review the medical records of the victims and overseas cases before confirming the facts.