The health authorities conducting an epidemiologic investigation to determine the cause of the group food poisoning accident in Sangnok-gu, Ansan-si, Gyeonggi-do, and decided to expand the scope of the investigation to the learning process.

This is because intestinal hemorrhagic Escherichia coli was not found in the preservation diet and environmental specimen tests conducted so far.

Ansan-si Sangnoksu Public Health Center announced that it will investigate whether it has been exposed to intestinal hemorrhagic E. coli in the course of learning by acquiring the preschooler's preservation formula and environmental specimen tests and also obtaining a table of recent learning programs.

The preservation diet means that food facilities are required to be stored at the facility for 144 hours in preparation for food poisoning, etc., and environmental samples are all samples that can cause food poisoning infections, such as cooking knives, cutting boards, and doorknobs.

An official from the public health center said, "If the research has been focused on feeding, but if you have learned to drink water or touch the soil, you may be infected with intestinal hemorrhagic E. coli in this process. Said.

In addition, health officials, including the Center for Disease Control and Prevention, will hold a countermeasure meeting in Ansan this afternoon with the Ministry of Education, the Ministry of Food and Drug Safety, and Gyeonggi-do.

In addition to the discussion on identifying the cause of food poisoning, the meeting is also expected to consider measures to extend the closure measures currently in kindergarten A.

Kindergarten A is known to have reverted to sending a text message to the parents of the mobile phone to resume business on the first day of the following month after the city's closure until the 30th of this month the previous day.