At the time, Costco told CBC News it would offer free booster shots in six months to all affected customers. Customer told booster was necessaryDan O'Reilly said he and his wife got their first shots in April at a Costco in Newmarket, Ont., after they were notified by the company they had bought the frozen berries. Dan O'Reilly and his wife received the hepatitis A vaccination after consuming the recalled berries, but were told they would not be given the promised booster shot when they contacted Costco six months later. O'Reilly said he was left feeling confused about whether or not a booster shot is in fact required to protect against hepatitis A. "At the time that we did it, we were told to tell people that a booster shot would be required in six months," said Damiani.

Source: CBC News October 22, 2016 09:56 UTC