(CNN)Covid-19 vaccinations for children younger than 5 are opening Tuesday crossed the United States, marking a milestone successful the nation's combat against the disease.
Last week, the US Food and Drug Administration expanded the exigency usage authorizations for Moderna's vaccine to see children 6 months done 17 years and Pfizer/BioNTech's for children 6 months done 4 years.
Then connected Saturday, US Centers for Disease Control and Prevention Director Dr. Rochelle Walensky signed disconnected connected Covid-19 vaccinations for children nether 5, clearing the mode for vaccinations to beryllium administered successful that property group.
About 17 cardinal kids nether the property of 5 are present eligible for Covid-19 vaccines.
"This is simply a large day. We've been waiting a agelong clip for children to person entree to the vaccine. We present person each property group, 6 months and above, successful the state which is present eligible to get extortion from the Covid-19 vaccine. And I'll archer you arsenic a dada of a 4-year-old, this is simply a large woody for my household arsenic well," US Surgeon General Dr. Vivek Murthy told CNN's Brianna Keilar connected Tuesday morning.
Vaccines fixed successful child-sized doses
Under the FDA's authorization, the Moderna vaccine tin beryllium fixed arsenic a two-dose superior series, with doses fixed 4 weeks apart, astatine 25 micrograms each dose, to infants and children 6 months done 5 years of age.
While the FDA has authorized Moderna's vaccine for children ages 6 to 17, the CDC has not yet recommended it for that property group, truthful those shots can't beryllium administered yet. The FDA authorization would let children ages 6 to 11 to person doses are 50 micrograms each. For those ages 12 and older, it would beryllium administered arsenic 100-microgram doses.
The Pfizer/BioNTech vaccine present tin beryllium fixed arsenic a three-dose superior series, astatine 3 micrograms each dose, for usage successful infants and children 6 months done 4 years. The vaccine is administered arsenic a two-dose superior bid astatine 10 micrograms per dose for children 5 to 11 and astatine 30 micrograms per dose for adolescents and adults ages 12 and older.
Completing the Pfizer/BioNTech vaccine bid is simply a longer process, arsenic the archetypal 2 doses are administered 3 weeks apart, and past the 3rd dose is fixed 8 weeks later.
Dr. Jeannette Lee of the University of Arkansas for Medical Sciences, who serves connected the FDA's vaccine advisory committee, expressed interest astir children not completing each 3 doses.
"Three doses volition surely benefit. I person a batch of interest that galore of these kids volition not get a 3rd dose," Lee said. "My interest is that you person to get the 3 doses to truly get what you need."
As for children who mightiness crook from property 4 to 5 astatine immoderate constituent portion completing their Pfizer/BioNTech vaccine series, the CDC recommends 2 options. The kid could implicit the two-dose superior bid authorized for children ages 5 to 11, oregon they could implicit the three-dose bid for younger kids, but each of doses 2 and 3 whitethorn beryllium either the dosage for younger children oregon ages 5 to 11.
The FDA's Vaccines and Related Biological Products Advisory Committee determined that the benefits of some vaccines outweigh the risks and noted that the vaccines person been "well-tolerated" among the children who got them successful objective trials.
According to objective proceedings data, communal broadside effects for some vaccines see symptom astatine the injection site, headache, fever, chills and fatigue. The vaccines appeared to elicit akin immune responses successful children arsenic has been seen successful adults.
Where young children tin get vaccinated
Pediatricians' offices and pharmacies are the main sites wherever young children could get vaccinated.
"We cognize that parents are going to privation to get their children vaccinated successful pediatricians' offices. Some radical volition spell to a pharmacy, immoderate radical volition spell to a children's infirmary oregon immoderate benignant of a assemblage wellness center," Dr. Ashish Jha, the White House's Covid-19 effect coordinator, said Monday connected CBS.
"But the bottommost enactment is, I deliberation a bulk of parents are going to privation to get their kid vaccinated successful their pediatrician's office," Jha said. "So, galore pediatricians are going to beryllium offering the vaccine."
As for the pharmacy locations offering these child-sized vaccines, CVS and Walgreens person announced plans to supply vaccinations.
CVS volition statesman administering Pfizer's Covid-19 vaccines to children nether 5 connected Tuesday, a communications typical told CNN.
"We volition statesman administering the Pfizer-BioNTech Covid-19 vaccine for eligible children 18 months done 4 years of property astatine our 1,100 MinuteClinic locations starting connected Tuesday," Matt Blanchette, elder manager of retail communications with CVS Pharmacy, told CNN successful an email.
"MinuteClinic is located wrong prime CVS Pharmacy stores successful 35 states and Washington, DC," Blanchette said. Appointments volition beryllium disposable connected a rolling ground according to vaccine supply.
Blanchette said children implicit 5 volition inactive beryllium capable to entree Covid-19 vaccines successful CVS pharmacies.
On Saturday, Walgreens announced successful a quality merchandise that appointments for vaccinations successful young children volition beryllium disposable starting June 25. Walgreens volition beryllium vaccinating children 3 and older astatine "select" locations, and appointments tin beryllium scheduled online.
Hy-Vee pharmacies volition person Covid-19 vaccinations disposable for children nether 5 erstwhile doses are available, a communications typical told CNN connected Monday.
"Hy-Vee anticipates receiving its allocations for the recently approved property groups successful the coming days," Tina Potthoff, elder vice president of communications, wrote successful an email.
"As soon arsenic we person vaccine and our assignment scheduler is unfastened for these property groups, we volition station an update connected our COVID-19 vaccine landing page, station connected our Hy-Vee store Facebook pages, and interaction media outlets successful our eight-state portion to marque them alert of our pediatric hubs that are accepting appointments."
Due to national regulations, she wrote, Hy-Vee volition lone beryllium providing vaccinations to children 3 and older.
"Under the PREP Act, retail pharmacies, including Hy-Vee pharmacies, are lone authorized to administer vaccines to patients ages 3+," Potthoff wrote successful the email. "Patients younger than property 3 should sojourn their pediatrician oregon wellness attraction supplier to person the COVID-19 vaccine."
CNN's Naomi Thomas and Virginia Langmaid contributed to this report.