The former New York Mayor, and other Democratic presidential candidates, have been critical of President Donald Trump's response to the outbreak.
In a statement released by his campaign, Bloomberg said the president was "putting lives at risk by ignoring science."
The commercial will air at 2030 ET (0130 GMT) on CBS and NBC.
Many shoppers have been left outraged after spotting M&S charging 'ridiculous amount' for a sandwich
David Jason and Nicholas Lyndhurst will forever be remembered for their roles as Del Boy and Rodney Trotter in Only Fools and Horses, but the pair's relationship off-screen has been far from perfect.
Maxine Longmuir, 69, was thrilled when she won a £2,500 holiday to Portugal on the ITV quiz show, but claims she was left devastated when she was told she was unable to rebook it
An expert guide to the Prone Bone sex position, including what it is, how to do it, and the benefits
The residents in question have been contacted
The Queen might have dined on some of the finest food in the world - but she was still partial to the occasional takeaway, and would send a footman to collect it
A driver who had been parking in a neighbour's space for three years was left fuming after his car was towed away - and the whole thing was caught on camera.
Police have visited a family at the centre of a dine-and-dash scandal, a restaurant owner allegedly targeted in the string of incidents has claimed.
A Place in the Sun host Craig Rowe said he was "hugely disappointed"
Kelly Allen, 45, cannot face returning to her work and the £350 statutory sick pay she is receiving each month is not enough to cover her bills
The King has granted new honours to Queen Camilla, the Prince and Princess of Wales, and the Duchess of Gloucester - find out more
Here's how Prince William and Princess Kate strayed from established tradition on the eve of Prince Louis' 6th birthday
It is illegal in the UK to get behind the wheel of vehicle without a valid photocard licence
Inflation in Iran makes Britain’s cost of living crisis look like a picnic.
Rescue teams raced against time to extricate the stuck child as 'devastated' parents watched
It is going to feel a lot different to the balmy weather we had last weekend
PoolDonald Trump just can’t help himself.Moments after a contentious hearing about whether Trump should be held in contempt for violating his narrowly worded gag order, the former president took to his favorite social media platform to trash the judge who holds his fate. “HIGHLY CONFLICTED, TO PUT IT MILDLY, JUDGE JUAN MERCHAN, HAS TAKEN AWAY MY CONSTITUTIONAL RIGHT TO FREE SPEECH. EVERYBODY IS ALLOWED TO TALK AND LIE ABOUT ME, BUT I AM NOT ALLOWED TO DEFEND MYSELF,” Trump wrote on Truth Social
Britain's Got Talent judge Amanda Holden isn't afraid to show off her enviable figure, and she recently did just that in an array of skimpy bikinis aboard a yacht
One follower said 'These photos are embarrassing and weird. Who rolls around on their lawn with a basket of lemons?'
Harper Beckham stunned this weekend as she celebrated her Spice Girl mum Victoria's 50th birthday, looking all grown up as she donned a satin gown for the occasion
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