The Worcester Warriors' second rower suffered a serious neck injury last month and was recently moved to a specialist spinal injuries clinic.
A fundraising campaign to help support the 27-year-old and his wife Tatiana during the rehabilitation period had already raised more than £28,000 ($US37,000) within the first 72 hours.
Players Association chief executive Damian Hopley said the campaign was set up to ensure Fatialofa had ongoing support.
"You couldn't think of sadder circumstances to see such a beautiful big man as Michael in hospital," he said.
