Sour Sausage Sparks Illness - Paranaque City, Metro Manila

Metro Manila, Philippines

I think from locally made Hungarian sausage I gave my five year old son, some Hungarian sausage that I just bought yesterday he was the first one who ate it and then when I tried it tasted sour, he pooped after that and it's just his ordinary. But then last night between 9-10 when he pooped again it's watery and his stomach starts to ache, I gave him probi bears and protw | Symptoms: Nausea, Stomach Pain