Mall-goers in Indianapolis, Indiana, may have been exposed to the hepatitis A virus (HAV) at a tea store, USA Today reports. A store employee with hep A prepared free tea samples on three separate weekends in April.

Health officials are warning that anyone who drank tea made at the Teavana store in The Fashion Mall at Keystone on April 5 or 12 should be on the lookout for signs of HAV, including nausea, vomiting, fever and yellowing of the skin or eyes.

In addition, shoppers who drank a free sample at the Starbucks–owned Teavana store on April 19 are eligible for a free hepatitis A vaccine or an immune globulin shot, because they may still be able to stave off the disease.

So far, no one has reported an infection linked to the store, and health officials are considering the warning a precautionary measure. Teavana has since been disinfected and is maintaining regular hours at the mall.

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