Paris is looking into baby milk problems. Many countries took back baby milk. The police started a big check on Thursday. They want to know if anyone was not careful. This is about milk with a bad poison.
Big milk companies are part of this. Nestle, Lactalis, and Danone are named. Small companies like Babybio are also checked. Parents told police their babies were sick. Babies ate the milk and then vomited. Many babies in the UK were also sick.
The problem is with a special oil. This oil is in baby milk. It helps babies grow. The bad poison might come from this oil. A company in China made the oil. This company is not making it now. China is checking its own baby milk.
The poison is called cereulide. It makes babies sick. Babies can vomit and have a sore tummy. The poison is very strong. You cannot cook it away. So, many milk boxes were taken from shops.
This is a big problem. It makes us think about safe food. It also makes us think about how food is made. The milk companies may have bad names now. Police will watch food more closely. This shows that food goes around the world. We need good rules to keep babies safe.