All staff and Public Health England have been alerted to the outbreak, EssexLive reports.
It is not known when the restaurant will reopen.
A McDonald’s spokesperson said on Friday August 28: “This week we proactively decided to temporarily close our Dagenham Fs-Dt restaurant as a precautionary measure after three of our employees tested positive for COVID-19.
“We contacted all of the restaurant employees, as well as Public Health England.
“As with all decisions we have made during this unprecedented time, the safety of our employees and customers is our top priority, and we will reopen as soon as we feel possible. ”
Since all branches reopened, some other stores across the UK have reported cases of coronavirus among staff members.
Earlier this month, a McDonald’s on Stamfordham Road in Newcastle underwent a deep cleaning after a member of staff tested positive for Covid-19.
Government guidelines say that a pub or restaurant that has been confirmed to have a positive case or cases of Covid-19 will not necessarily need to close, as it will depend on the circumstances.
The current guidelines say: “If someone develops symptoms of Covid-19 in the company or in the workplace, they should be sent home and advised to follow the stay-at-home advice and request a test.
“If a staff member has helped someone who has developed symptoms of Covid-19, they do not need to go home unless they develop symptoms themselves.
“They should wash their hands thoroughly for 20 seconds after contact with someone with symptoms consistent with COVID-19 infection.
“If the person who was sent home is subsequently confirmed to have Covid-19, they can be contacted by NHS Test and Trace and asked to self-isolate.
“There is no need to shut down the business or workplace or send staff home unless you are advised to do so after investigation by the appropriate authorities. You must continue to monitor the government’s response to Covid-19 for further updates. “