DeSantis said school districts can institute mask requirements, but parents must be able to opt their child out of it.
Florida's hospitals and doctors have pointed out that upward of 90 percent of their patients have been unvaccinated.
"That kind of politicization... there's no place for that when you're dealing with a public health crisis," Fauci told CNN on Sunday.
A judge ruled that the ban ordered by Governor Ron DeSantis is unconstitutional.
Some hospitals have reportedly made "frantic calls" about delayed oxygen deliveries as supplies dwindle amid Florida's continuing surge of COVID-19.
Parents from 12 Florida school districts are suing DeSantis, saying his mask ban violates the state constitution and potentially endangers their families.
The virus is continuing to hit the state hard as Governor Ron DeSantis continues to defend his ban on vaccine and mask mandates.
More than 90 percent of Democrats and 60 independent voters said they do not want to the Florida governor launch a bid for the White House.
Dan Bauman was arrested after he allegedly shoved a student outside of Florida's Fort Lauderdale High School, according to the police report.
With the Delta variant accounting for 93 percent of new cases, six governors face a strain on their hospitals as they remain focused on keeping their states open and deregulated.
Forty-six percent of Floridians believe DeSantis is hurting efforts to limit the virus's spread, the poll found.
"Bottom line is this is a very effective intervention for COVID-19... and we recommend strongly that we utilize this to its fullest," Fauci said on Tuesday.
"Masking of any sort that you can get your hands on is better than no masking," Dr. Mona Mangat said, as children under 12 are still ineligible for the vaccine.
Florida recently recorded 1,486 deaths among residents over one week, its highest ever figure.
Florida data shows that one in every four new infections involves someone 19 or younger.
The Republican governor has sent many tweets in August about monoclonal antibody treatment centers opening in the state.
A majority of likely voters polled in Florida said DeSantis "cares more about running for president" than Florida's future.
"Because of the Delta variant, our schools are not safe and secure unless everyone wears a mask," said attorney Charles Dodson, a former judge.
A ruling may come as early as the end of this week, and it could affect all school children across the state.
"To me, your rights end when that child's rights are infringed on," said Leon County Schools superintendent Rocky Hanna on Sunday.
In the MeidasTouch video, a line pops up reading "Ron DeSantis doesn't give a ... about your child."
The Florida governor's crusade to prevent COVID-19 restrictions has drawn ire from local officials, including Miami Beach Mayor Dan Gelber.
Bridget Ziegler, a school board member who voted against the mandate, told Newsweek "there's no real ideal or optimal situation."
Despite the petition proving popular, the public in Florida do not have the power to recall elected officials.
Two official spokespeople for the Taliban have active Twitter accounts that combined have a following of over 400,000.
"We cannot have government officials pick and choose what laws they want to follow," Commissioner of Education Richard Corcoran said in a statement.
"It's terrifying. I'm afraid that we're going to have a lot of really sick kids in addition to the spread, which is going to be a lot of sick adults," Dr. J. Stacey Klutts said.
The Biden administration has stepped up its opposition to states that ban schools from enforcing mask mandates.
The Miami-Dade School Board also voted to implement a mask mandate. DeSantis has vowed to retaliate against schools that do so.