The CDC declared an outbreak of Hepatitis A over the weekend that has affected over 30 people in 5 states. Preliminary information confirms the source of the outbreak stems from organic frozen berries that were sold at Costco stores (including stores in Washington) yet sickened people thus far are in Colorado, New Mexico, Arizona, Nevada, and California. No cases have been reported in Washington to date. The berries: Townsend Farms Organic Anti-Oxidant Blend, a frozen berry and pomegranate seed mix, have now been pulled from shelves and people who purchased these berries from February through May are being contacted.
The amazing thing about this outbreak: there’s been no reported cases of Hep A in children under age 18.
In the United States, Hepatitis A typically spreads through contaminated food handled by someone with the infection. Rates of Hepatitis A infection tops 5,000-10,000 cases annually in the US while they are far higher in the developing world because city water sources can get contaminated (see below). Hepatitis A vaccine is recommended before international travel.
The lack of children with infections from this outbreak is logical and potentially illustrative.