introduced their Angus burger series as a competitive measure to McDonald's, which first introduced its own Angus burgers in Canada in 2008. Harvey's presently uses all-Canadian beef. Legal disputes E. coli outbreak In October 2008, over 200 people were infected with the O157:H7 strain of E. coli due to contaminated onions at the North Bay, Ontario, location. There was a class action lawsuit against Harvey's; the end result was a cheque for $1,000 to $7,250 per victim. Harvey's vs. Hardee's There is no affiliation between Harvey's and the American hamburger chain Hardee's. The latter's parent company CKE Restaurants has been prevented from opening stores in Canada under the Hardee's name due to a trademark dispute. CKE has instead launched the Carl's Jr. brand in Canada. Loyalty program Harvey's began a partnership with Scene in February 2015. Advertising Harvey's advertising takes the form of promotional coupons, social media presence on Facebook and television commercials. Free Burger Week On the last Sunday of May each year in 2007, 2008 and 2009, Harvey's held a Free Original Hamburger Day at all locations across Ontario and Quebec. The purpose of this event was to "celebrate Canada's best tasting burger" and to attract new customers who might not otherwise go into Harvey's. These events were loss leader sales where Harvey's hoped to sell side items and create customer loyalty. The event was extended across Canada in 2008, and later in 2009 to coincide with the chain's 50th anniversary. All these events were limited to one free burger per person. From 2010 onward, the event was changed to a "Free Burger Week" in June of every year, but now works as a "buy one, get one free" instead of a completely free burger. However, there is no longer a limit of one per person, and any burger (including chicken and veggie) can be obtained with the new deal. Slogans Retail presence In the early 1990s, some Harvey's locations featured items from the American chain Church's Chicken. After Cara acquired Harvey's, the Church's partnership was ceased and replaced with Swiss Chalet. In some cases, locations are adjacent to or co-located with Swiss Chalet locations. There are also a few Home Depot Harvey's stores that are co-located with Second Cup, a coffee chain that used to be owned by Cara. See also List of Canadian restaurant chains List of hamburger restaurants List of assets owned by Recipe Unlimited