Skip to Main Navigation Skip to Content
Covid

Dosing intervals for COVID-19 mRNA Vaccine

Jan 14, 2021 | Beth Hess

On January 6, CDC revised Interim Clinical Considerations for Use of mRNA COVID-19 Vaccines Currently Authorized in the United States. The portion regarding dosing intervals is summarized below:

  • Routine Scheduling. Do not schedule people to receive dose #2 earlier than recommended (i.e., 21 days for Pfizer-BioNTech or 28 days for Moderna).
  • Inadvertent Early Doses. Dose #2 inadvertently administered as much as 4 days too early (“grace period”) should be considered valid.
  • No Maximum Interval. There is no maximum interval between dose #1 and dose #2 for either vaccine. If dose #2 is administered beyond 21 or 28 days, there is no need to restart the series or repeat the dose.
  • Errors. Vaccine administration errors should be reported to the Vaccine Adverse Event Reporting System (VAERS).

Visit CDC’s COVID-19 Vaccination: Clinical Considerations gateway page for more information.

About Beth Hess

More posts by Beth Hess

Related Posts

Ebola
  • Tools & Resources

Outbreak of Ebola virus disease (Sudan ebolavirus) in...

The Centers for Disease Control and Prevention (CDC) has issued a Health Alert...

Oct 06, 2022 | Beth Hess

Outbreak of Ebola virus disease (Sudan ebolavirus) in...

  • Webinar
  • HIV, STI, & Viral Hepatitis

Responding to MPX at Local HIV STI Programs Leveraging...

NACCHO hosted a webinar to share how LHDs can take advantage of flexibilities...

Oct 05, 2022

Responding to MPX at Local HIV STI Programs Leveraging...

  • Tools & Resources
  • Immunization

Understanding and Responding to a Recently Published...

A new CDC-funded observational study was released on September 27th, 2022 in...

Oct 04, 2022 | Robin Mowson

Understanding and Responding to a Recently Published...

Putting the pieces together
  • Funding Opportunity
  • Opioid Overdose Epidemic
  • Opportunity
  • Substance Use Disorder

Funding Opportunity: Harm Reduction and Academic...

With support from the Centers for Disease Control and Prevention (CDC), NACCHO...

Oct 03, 2022 | Bailey McInnes

Funding Opportunity: Harm Reduction and Academic...

Harm reduction resized
  • Press Release

NACCHO Awards Nearly $175K to Five Sites for Projects to...

— The National Association of County and City Health Officials (NACCHO),...

Sep 30, 2022 | Bailey McInnes

NACCHO Awards Nearly $175K to Five Sites for Projects to...

Expectant Mother Texting web
  • Community Engagement
  • Community Resilience
  • Emergency Response
  • Maternal, Child, & Adolescent Health

Preparedness Month Profile: An Interview with Sue...

To celebrate Preparedness Month, NACCHO is highlighting Western Upper Peninsula...

Sep 27, 2022 | Elana Filipos, Gideon Amaniel

Preparedness Month Profile: An Interview with Sue...

Infant Ready Kits Arrive CO web
  • Community Engagement
  • Emergency Response
  • Maternal, Child, & Adolescent Health

Preparedness Month Profile: An Interview with Allison...

To celebrate Preparedness Month, NACCHO is highlighting Jefferson County...

Sep 27, 2022 | Elana Filipos, Gideon Amaniel

Preparedness Month Profile: An Interview with Allison...

I Stock 1255590806 healthcare staff resized
  • Funding Opportunity
  • Antibiotic Resistance
  • Epidemiology
  • Infection, Prevention, and Control

2023-2024 LEAP Fellowship Opportunity

The Infectious Diseases Society of America (IDSA), the Society for Healthcare...

Sep 23, 2022 | Jaclyn Abramson

2023-2024 LEAP Fellowship Opportunity

Opportunity
  • Funding Opportunity
  • Infectious Disease
  • Maternal, Child, & Adolescent Health

RFA: Demonstration Sites for Bridging Preparedness,...

Request for applications due October 20.

Sep 20, 2022 | Elana Filipos

RFA: Demonstration Sites for Bridging Preparedness,...

More NACCHO Blogs

Stories from the Field

Stories from the Field provides a means for local health departments to share their experiences and demonstrate the value of public health.

Preparedness Brief

The Preparedness Brief provides updates and information from NACCHO’s public health preparedness portfolio.

The Essential Elements of Local Public Health

The Essential Elements of Local Public Health provides updates and information from NACCHO’s Environmental Health and Infectious Disease portfolios.
Back to Top