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The Department of Health confirmed that Costco customers are being contacted, and urged to monitor for symptoms. Costco is using receipts to determine who might be at risk.
Symptoms of Hepatitis A infection include fever, fatigue, loss of appetite, abdominal discomfort, dark urine, diarrhea, and yellow skin and eyes.
Hepatitis A Questions and Answers (FAQ) from the Centers for Disease Control and Prevention (CDC)