"We're seeing folks who have struggled before really being hit particularly hard," de Blasio said at a City Hall briefing.
Preliminary data indicates that black people account for 28 per cent of the city's Covid-19 death toll, even though they are just 22 per cent of the city's population. Hispanic people account for 34 per cent of the city's virus death toll and 29 per cent of its population.
De Blasio said of the racial disparities: "It's sick. It's troubling. It's wrong. And we are going to fight back with everything we've got."
Dr Oxiris Barbot, the city's health commissioner, noted that the communities that have been hit the hardest by the virus "have had higher rates of underlying chronic illness" than other New Yorkers.
State health officials reported yesterday that more than 4,000 people have been killed by the virus in New York City. The city's new round of data is based on a smaller number of cases, about 1600, where the race and ethnicity of the victim is known.
De Blasio said the city would embark on a multimillion-dollar public service campaign to reach non-English speaking communities with information about the virus.
Cuomo, speaking separately later in the day, said he also was troubled by the disparities and will order more testing in minority communities.
"Why is it the poorest people always pay the highest price?" Cuomo asked. "But let's figure it out. Let's do the work. Let's do the research. Let's learn from this moment."
When the city fatality figures are adjusted to reflect the age makeup of ethnic groups within the city's population, the disparities are more stark. The age-adjusted death rate for both blacks and Hispanics was more than double the rate for non-Hispanic whites.
Asians experienced a much lower rate of fatalities: 8.4 per 100,000 residents, compared with 10.2 for non-Hispanic whites, 19.8 for non-Hispanic blacks and 22.8 for Hispanics.
Although the figures released today show racial disparities in who has died of the virus, the disparities are not as great as those that have been reported elsewhere in the country.
Figures released by Michigan's Department of Health and Human Services show 40 per cent of those who have died from Covid-19 are black in a state where African Americans are just 14 per cent of the population.
DEATHS AND HOSPITALISATIONS
New York coronavirus deaths rose by 779, a record number for a second consecutive day, and Cuomo warned the toll will climb even as hospitalisations from the outbreak finally moderate.
New York state recorded 6,268 deaths by yesterday.
The grim news was accompanied by more evidence that New York is arresting the outbreak's month-long rise. The hospitalisation rate is decreasing, Cuomo said, meaning the overburdened system could stabilise over the coming weeks if trends continue.
The Governor said New York is at last "flattening the curve" of the outbreak. Still, the number of deaths will continue to rise as patients hospitalised for a longer period of time die.
"I understand the science of it. I Understand the facts and the logic of it. But it is still incredibly difficult to deal with," Cuomo said at a state Capitol news briefing. "Every number is a face, and that's been painfully obvious to me every day."
NUMBER DISCREPANCY
De Blasio acknowledged that the city's official coronavirus statistics have missed hundreds of people who died at home without ever being tested for the virus, and said the city would start including such victims in its Covid-19 tally.
"The blunt truth is coronavirus is driving these very tragic deaths," de Blasio said on CNN.
He added, "We're not talking about, you know, 10 people, 20 people. We're talking about something like 100, 200 people per day."
The city's Fire Department has recorded as many as 200 deaths at home daily in recent weeks, far more than the average 25 deaths at home before the pandemic.
De Blasio said the city would start including in its official tally of deaths people who died at home without a test.
- AP