#Pfizer second dose timing cdc full#
#Pfizer second dose timing cdc series#

'In exceptional situations in which the first-dose vaccine product cannot be determined or is no longer available, any available mRNA COVID-19 vaccine may be administered at a minimum interval of 28 days between doses to complete the mRNA COVID-19 vaccination series,' the CDC stated.īut the CDC made clear that a vaccine-mixing scenario should be avoided, if possible.įILE - A COVID-19 vaccine hub taking appointments only stands in Brooklyn as the city begins to run low on doses on Jan. But according to the CDC, in the 'exceptional' event that there are not enough doses of the Moderna vaccine to administer a second shot, it is acceptable to use the Pfizer vaccine. If a person gets a first dose of the Moderna shot and the 28-day interval period is up, it is recommended that the second dose be Moderna also - and the same goes for the Pfizer vaccine.

#Pfizer second dose timing cdc series#

Both doses of the series should be completed with the same product,' according to the CDC’s website.

The safety and efficacy of a mixed-product series have not been evaluated. 'These mRNA COVID-19 vaccines are not interchangeable with each other or with other COVID-19 vaccine products.

The CDC’s updated guidance also says that the Moderna and Pfizer vaccines can be interchanged between the first and second doses in 'exceptional situations,' but the agency stressed that such a scenario should be avoided and that vaccines should not be mixed, citing a lack of scientific evidence to suggest that mixing the two shots still provides adequate protection from COVID-19.

#Pfizer second dose timing cdc full#

The full vaccine schedule can be found here.RELATED: CDC finds 10 cases of life-threatening reaction to COVID-19 vaccine out of more than 4M administered dosesīut the CDC has approved a longer wait for the second dose, stating it is safe and effective to administer the shot 6 weeks (42 days) after the first dose. Other interesting changes include poliovirus and dengue vaccine recommendations in those special circumstances. In addition, the language for persons with egg allergy with symptoms other than hives was moved from the appendix to the “Special situations” section.”įor the MMR vaccine: 'The “Special situations” section was updated to include recommendations for additional MMR doses in a mumps outbreak setting.' Other Important Changes to the Schedule The extensive schedule includes changes for other routine vaccines.įor the pneumococcal conjugate vaccine: “This dose is only necessary for children aged 12–59 months regardless of risk, or aged 60–71 months with any risk, who received 3 doses before age 12 months.”įor the influenza vaccine: “Language was added to the “Special situations” section to clarify that live attenuated influenza vaccine should not be administered to close contacts of immunosuppressed persons who require a protected environment. However the federal agency also makes the distinction that there are FDA-authorized exceptions when children’s ages are transitioning and they offer guidance for those circumstances. The CDC makes the point that all vaccines for children and adolescents be given the age-appropriate vaccine and dosage based on their age at the time of their vaccination. “Monovalent mRNA vaccines are not authorized as a booster dose.”

Age 12–18 years: 2-dose series at 0, 4-8 weeks (Moderna) or 2-dose series at 0, 3-8 weeks (Novavax, Pfizer-BioNTech)įor boosters they recommended the following: “People ages 6 months and older are recommended to receive 1 bivalent mRNA booster dose after completion of any FDA-approved or FDA-authorized primary series or previously received monovalent booster dose(s) with the following exception: children 6 months–4 years who receive a 3-dose Pfizer-BioNTech primary series are not authorized to receive a booster dose at this time regardless of which Pfizer-BioNTech vaccine (i.e., a monovalent or bivalent) was administered for the third primary series dose,” the authors wrote.

Age 5–11 years: 2-dose series at 0, 4-8 weeks (Moderna) or 2-dose series at 0, 3-8 weeks (Pfizer-BioNTech).Age 6 months–4 years: 2-dose series at 0, 4-8 weeks (Moderna) or 3-dose series at 0, 3-8, 11-16 weeks (Pfizer-BioNTech).The changes were published in the most recent MMWR.Īccording to the CDC, the following are the COVID-19 vaccine recommendations for the primary series:

“The routine vaccination section describes the recommendations for primary series in the general population, and the special situations section describes the recommendations for primary series in persons who are moderately or severely immunocompromised,” the authors wrote about the COVID-19 vaccine schedule. The published new recommendations for families and clinicians are part of routine vaccinations as well as inclusion of the COVID-19 vaccine. The CDC’s Advisory Committee on Immunization Practices (ACIP) announced the updated 2023 immunization schedule for children and adolescents under 18 years of age.