A scientist who been asked to peer-review the unpublished recommendations told the BBC that Parliament had “not been told the full truth”.
He added that the report is an “open secret” and called on the Government to publish the findings.
The findings from PHE said that people of Bangladeshi heritage were dying at around twice the rate of white Britons.
It also found that other minority ethnic groups were at up to 50 per cent higher risk of dying, but the document was criticised for not including any safeguarding measures.
PHE said the recommendations will be published next week when submitted to ministers.
Professor Raj Bhopal from the University of Edinburgh said the report had “every hallmark of a [Government] report ready to go to the press”.
He added: “If you consult the public, you must publish the results.
“Otherwise, you’ve wasted their time, you’ve wasted your own time, you’ve wasted taxpayers’ money, and you’ve lost trust.”
Prof Bhopal said the document titled Beyond the Data: Understanding the Impact of Covid-19 on Black, Asian and Minority Ethnic (BAME) Communities, and marked “official sensitive”, contains evidence from 4,000 parties.
PHE said in a statement: “The Government commissioned PHE to conduct an epidemiological review to analyse how different factors can impact on people’s health outcomes from Covid-19. This was published in full on the 2nd June.
“In parallel, Professor Kevin Fenton, on PHE’s behalf, engaged with a significant number of individuals and organisations within the BAME community, to hear their views, concerns and ideas about the impact of Covid-19 on their communities.”
Labour has called the incident a “scandal” and “yet another in a litany of failures to support BAME communities during Covid-19″.
Marsha De Cordova MP, Labour’s shadow women and equalities secretary, added: “The Government must now urgently publish these recommendations in full and provide an explanation for its lack of transparency on this review. Black Lives Matter is more than just a slogan, we cannot wait any longer for action to tackle racial injustice.”
Mayor of London Sadiq Khan said the urgent action was required from the Government to protect BAME people.
“Ministers must urgently explain why they refused to publish this vital piece of work by Public Health England and publish it immediately,” said the Mayor.
“The original PHE report includes some serious and important recommendations, many of which I and others have been calling for.
“What the Government has published so far has been nothing we didn’t already know and will lead to no improvements or reductions in the disproportionate impact on our BAME communities.”
One of the country’s largest unions described it as “going beyond mismanagement of the crisis and has stepped into institutionalised racism”.
In a statement, the GMB said: “By suppressing further investigation into the disproportionate deaths amongst Black Asian Minority Ethnic communities and refusing to put in place the recommended additional protection, this Government will have cost lives.”