Transcript for Frozen Berries Contaminated With Hepatitis A
We're going to turn to breaking musical news right now. As many of you may be preparing your breakfast this morning, there's a developing and potentially lethal headline to tell you about regarding a breakfast staple. Dozens of people are sick in five states after eating frozen berries and pomegranate mix, with hepatitis a. Susan, welcome. Good morning. Glad to be here. Ever grab for a bag of frozen berries to make a smoothie for breakfast? Or muffins or a cake? Plenty of people do. You might want to pay special attention to a new alert coming from federal health officials. Some of the berries are making people very sick. Organic berries in your diet is supposed to be one of the most healthful things to do. But that's being tested now. The food and drug administration has linked an outbreak of hepatitis a to a frozen organic berry mix, sold nationally at costco. This morning, officials say thousands of bags of tainted berries may be sitting in freezers across america. It's shocking. It's really not good. It is concerning. It makes you wonder. Reporter: So far, at least 30 people have been sickened in 5 western states. Arizona, california, colorado, new mexico and vada. Health officials have not announced a recall. But they recommend avoiding townsend forms organic antioxidant blend. Costco has pulled the product and is trying to notify customers who might have bought it. But it's unclear how many people that may be. We just used it four weeks ago at a big family breakfast. We put it in some muffins. It's concerning. We hope we don't all have hepatitis. Reporter: Hepatitis a is a highly contagious liver infection. It can be deadly, yes. But not for everybody. Once the virus has infected you, it's impossible to treat and get rid of. On a quick basis. It goes away over time. Reporter: Hepatitis a often finds its way into the food supply through infected food handlers who don't take proper precautions, such as washing their hands. Federal officials are trying to find the source of the contamination. But the berry mix contained produce from farms here in the u.S., Argentina, chile and turkey. So, the search could take a while. A big scramble this morning. Very scary. Susan, great to have you on the broadcast. And welcome to abc news.
This transcript has been automatically generated and may not be 100% accurate.