The fixture was the second United game to be called off this week following the postponement of Tuesday’s trip to Brentford due to a Covid-19 outbreak at the club.
United have also shut down first-team operations at their Carrington training ground until early next week to try and stem the tide of positive results.
Preparations for the Brighton game and a full-house at Old Trafford were well underway when the match was called off on Thursday with United having only seven players available.
But the club were determined not to let everything go to waste and made use of as much as they could to aid charity in the build-up to Christmas.
More than 4,000 items of food including fresh sandwiches, fruit and vegetables, have been donated to local food banks.
In addition, flowers and gifts from the hospitality suites at Old Trafford have been given to St Ann’s Hospice and local charities respectively.
It follows a joint donation of £100,000 by the club and the Manchester United Foundation to food charity FareShare that was announced earlier this week.
Collette Roche, United’s chief operating officer, Manchester United, said at the time:
‘We are proud of the work Manchester United Foundation does to support our local community and this has never been more important than it is now with so many households facing a tough winter.
‘Manchester United is pleased to be making this joint donation with the Foundation to FareShare Greater Manchester and we invite our fans to unite with us behind this crucial cause.’