5.3 said "Is good and fair to mention establishment and state the business place? I wonder what the owner of the business think of it. Why not mention the name(s) of the person(s)! If it is to avoid that business then why not state the name of persons or house to avoid as well. "
Contact tracing is extremely important in getting ahead of any potential wider outbreaks. When they publicize a place of business, it will be because they don’t have means to contact everyone who may have attended during the time window of interest. If you know of anyone that was at any of these places on those dates/times, please show them the link.
Going back to the previous Covid wave, stores take serious measures when learning of a case in order to be able to continue business as safely as possible within guidelines set out... just as noted in the Virden link above.
I don't see the March 27-29 Brandon cases lised on Loblaw's (Superstore) website as of now, but you can read about their Covid policy at:
https://www.loblaw.ca/en/covid-19/
Subway Canada's page with details on the pandemic is at:
https://www.subway.com/en-CA/AboutUs/SocialResponsibility/covid19