Millions of Americans still need to be vaccinated to slow or stop the spread of Covid-19 and bringing the pandemic under control could require many, many additional vaccine mandates, said Dr Anthony Fauci. Fauci, the director of the 'National Institute of Allergy and Infectious Diseases, said that if more people were not persuaded to get vM essaging health officials and trusted political messengers , additional school and business mandates may be needed. I think this is going to be a game-changer because I don't think people will want not to go to work or not to go to college… They will, said Fauci. CNN's Jen Christensen in an interview with NLGJA, the LGBTQ Journalists Association, Sunday convention. You would like them to do this on a completely voluntary basis, but if that doesn't work you have to look to the alternatives. The combination of the highly contagious Delta variant and refractory vaccines has placed the United States in a very difficult time of the Covid-19 pandemic, Fauci said. Florida Governor Ron DeSantis threatens to fine counties and cities in states for vaccination warrants Of eligible population in United States , which is currently limited to people 12 years and older, 63% are fully vaccinated, according to data from the Centers for Disease Control and Prevention. Experts and health officials aim to vaccinate the vast majority of the population to control The spread. Read moreLast week, President Joe Biden Announced Vaccine Requirements which include a mandate for companies with more than 100 employees to require vaccination or regular testing for employees. Companies that want their employees to return to work and stay on the job will benefit from the vaccine requirements, said U.S. surgeon general Dr Vivek said Murthy. The tenure will also benefit employees, he added. I believe it will not only improve public health, but it will give people more peace of mind, Murthy told CNN on Sunday. p class = superImgCenter > A sign outside Langer 's Deli in Los Angeles on August 7 stating proof of a Covid-19 vaccination is required for entry. As the debate over tenure continues, some hospitals are feeling the impact of delayed immunization rates. Colorado Governor Jared Polis sounded the alarm on Friday, saying, We actually have thehe lowest ICU rate we've had since the start of this crisis, in part because of those unvaccinated with Covid and just other types of trauma that are increasing seasonally around this time of the year. year. Polis said some hospitals in his state were reaching very close to their capacity limits. And that wouldn't happen if people were vaccinated. As a reminder, or not as a reminder? An international group of vaccine scientists, including some from the United States Food and Drug Administration and of the World Health Organization, says current evidence on Covid-19 vaccines does not appear to support the need for booster vaccines in the general public. Scientists, who wrote an article on this, understand two senior FDA vaccine officials, Dr Philip Krause and Marion Gruber, who will be step by step in October and November , the FDA announced late last month. No further details have been released on their retirements, although they have raised questions as to whether the departures will affect the agency's work. Two outgoing FDA leaders among scientists who say Covid-19 vaccines do not currently show a need for a boost ' The authors of the article write that the vaccine 's efficacy remains high against serious diseases, including for highly trans people Missible delta variant, although less for symptomatic disease. The proofThe current results therefore do not seem to show a need for a booster in the general population, in which the efficacy against serious diseases remains high , write the scientists in the new article, published Monday in the medical journal The Lancet .The FDA and others Public health agencies around the world continue to examine the evidence for the effectiveness of the Covid-19 vaccine and the role that booster doses of the vaccine may play in improving immunity to the disease. More data on the subject will be coming soon. The New England Journal of Medicine will release Israeli data showing that a Booster dose of Pfizer's vaccine significantly decreased severe Covid-19, according to Dr. Nachman Ash, director general of Israel's ministry of theHealth. Case child Covid-19 has increased by almost 240% since July, according to pediatrician group Israel began booster program on August 1; So far, booster injections have been given to 2.8 million people. To date, most of the country's data on the effectiveness of booster injections has not been reviewed by external experts and published in a medical journal. U.S. federal health officials have announced plans to offer booster doses this fall, starting September 20, subject to FDA clearance and CDC consent. The committee consuThe FDA's Vaccines and Related Biologics Act meets on Friday to discuss the request from vaccine makers Pfizer and BioNTech to administer their Covid-19 vaccine as a third dose, or booster injection, to the elderly 16 years and over. Children could have access to vaccines by Halloween Parents concerned about protecting their young children from the virus could have access to vaccines for them by Halloween, a said the former commissioner of the FDA.Dr. Scott Gottlieb, a member of the Pfizer board of directors, told CBS Face the Nation on Sunday that the company is expected to have vaccine data for children ages 5 to 11 ready for the FDA from 'by the end of September. The FDA says it will be a matter of weeks, not months, to determine if they ' ll allow vaccines for children 5 to 11 years old. I interpret that as being maybe four weeks old,maybe six weeks, Gottlieb said. Jeff Bridges says he was 'close to the Pearly Gates ' while battling Covid during cancer treatment However, Dr. Rochelle Walensky, CDC director, was more cautious about when children can be vaccinated. She said on Monday that the CDC was urgently working on a Covid-19 vaccine for young children, in hopes that they will be vaccinated by the end of the year. We are waiting for the companies to submit the data to the FDA. We expect this to happen in the fall, she told NBC's Today show. We exawill undermine this data from the FDA, CDC, with the urgency we all feel to get our children vaccinated and hopefully by the end of the year. In the meantime, the FDA has warned parents not to run to immunize their children before agency approval. Children are not little adults - and the problems that can be addressed in the pediatric vaccine sort This can also include s ' there is a need for different doses or different strength formulations of vaccines already in use for adults, the FDA said in a statement Friday. Until it is safe to vaccinate this age group , Dr. James Versalovic, chief pathologist at Texas Children 's Hospital, told CBS that prevention is crucial. In addition to prevention ... we must continue to emphasize to all parents and families the importance of rapid diagnosis through testing, Versalovic mentioned. And then sort out the care ofe appropriate manner. Decide if this child needs hospital care. We now know how to treat children at this point in the pandemic. NYC Welcomes Students Again The New York City public school system reopened Monday morning with 100% of its students in back in the classrooms. We have been working for 18 months to prepare for this day, New York Education Chancellor Meisha Ross Porter said. CNN in an interview Friday. All Students and teachers returning to school on Monday will be required to wear masks, and the city previously announced a vaccination mandate for all public school employees without test refusal. Friday, United Federation of Teachers said in a statement that aindependent arbitrator has ruled that teachers who have documented or religious exemptions should be offered out-of-class work. Notice: Delta may have reached its peak but we are in a 21st century cold war Education Ministry officials said on Monday that 74% of teachers and 66% of students aged 12 to 17 years had been vaccinated in New York. US Secretary of Education Miguel Cardona appeared virtually from a school in the Bronx and praised NYC de ficials for the plan to reopen. look - they worked so hard, they got readys, they do everything to ensure the safety of your children and staff said Cardona. Also Monday, NYC began to enforce its vaccination passport rules, which make vaccinations mandatory for indoor meals, gyms and other places. This is the day we have been waiting for, de Blasio said on Monday. history will remember, he said, as a game-changing day, a difference maker, a turning point. It's the day NYC comes back with a bang. CNN's Dakin Andone, Jen Christensen, Elizabeth Cohen, Aya Elamroussi, Jessica Firger, Jacqueline Howard, Virginia Langmaid, Eric Levenson, Kristina Sgueglia, Elizabeth Stuart and Holly Yan contributed to this report.