NCT04895475

Brief Summary

The purpose of this research study is to conduct a prospective longitudinal surveillance research study, enrolling approximately 60 lactating mothers who receive the SARS-CoV-2 vaccine, and then following their clinical and laboratory parameters for up to 12 months. The overall goal is to investigate the characteristics of antibody formation in lactating women receiving SARS-CoV-2 vaccination, documenting the antibody isotypes, titers, duration, and transfer into milk over time.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
61

participants targeted

Target at P25-P50 for all trials

Timeline
Completed

Started Feb 2021

Typical duration for all trials

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

February 19, 2021

Completed
3 months until next milestone

First Submitted

Initial submission to the registry

May 17, 2021

Completed
3 days until next milestone

First Posted

Study publicly available on registry

May 20, 2021

Completed
12 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

May 10, 2022

Completed
1.3 years until next milestone

Study Completion

Last participant's last visit for all outcomes

August 31, 2023

Completed
Last Updated

July 30, 2025

Status Verified

July 1, 2025

Enrollment Period

1.2 years

First QC Date

May 17, 2021

Last Update Submit

July 28, 2025

Conditions

Outcome Measures

Primary Outcomes (1)

  • IgA antibodies against Spike protein

    A 3-month cumulative prevalence of IgA antibodies against Spike protein after the completed administration of the SARS-CoV-2 vaccine.

    12 months

Secondary Outcomes (1)

  • SARS-CoV-2 antibodies

    12 months

Study Arms (1)

Lactating Mothers

Lactating mothers who plan to receive or have received the SARS-CoV-2 vaccine within 60 days.

Behavioral: SARS-CoV-2 vaccine

Interventions

Baseline demographics, baseline breast milk samples, and blood collection will be obtained at the initial visit. Serial collections of breastmilk and blood as well as weekly self-administered monthly surveys will occur

Lactating Mothers

Eligibility Criteria

Age18 Years+
Sexfemale
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodProbability Sample
Study Population

Lactating mothers receiving the SARS-CoV-2 (COVID-19) vaccine.

You may qualify if:

  • Age ≥ 18.0 years at the time of enrollment
  • Currently lactating mothers
  • Planning to receive the SARS-CoV-2 vaccine in the next 60 days, or vaccinated with the SARS-CoV-2 vaccine within the past 60 days
  • Cell phone that can be used for text messaging or web-based viewing of surveys
  • Willing and able to provide informed consent
  • Ability to comply with all study related evaluations and follow-up

You may not qualify if:

  • Any condition or illness that makes study participation ill-advised

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Cincinnati Children's Hospital Medical Center

Cincinnati, Ohio, 45229, United States

Location

Related Publications (1)

  • Ware J, McElhinney K, Latham T, Lane A, Dienger-Stambaugh K, Hildeman D, Spearman P, Ware RE. Sustained and Boosted Antibody Responses in Breast Milk After Maternal SARS-CoV-2 Vaccination. Breastfeed Med. 2023 Aug;18(8):612-620. doi: 10.1089/bfm.2023.0106.

Biospecimen

Retention: SAMPLES WITH DNA

Breast milk: A small amount of breast milk (up to 10 mL) will be collected by the mother and frozen for future analysis. One breast milk sample per week is requested during the first eight weeks of study participation or until 3 months after the final vaccine dose (whichever is longer). Samples can be provided at an increased frequency (up to five times per week) in special circumstances such as a recent COVID infection or childbirth, or off schedule at the time of weaning, at the request of the PI. Blood: Finger-stick blood samples will be collected from study participants at baseline and then every two weeks for four consecutive samples or until 3 months after the final vaccine dose (whichever is longer) for serologic testing. Blood will be collected monthly from 3 through 6 months after final vaccination, and quarterly thereafter. Volumes of blood will be up to 0.5 mL at each collection, using small-sample Mitra devices from a finger stick.

MeSH Terms

Conditions

COVID-19Coronavirus InfectionsSevere Acute Respiratory Syndrome

Interventions

COVID-19 Vaccines

Condition Hierarchy (Ancestors)

Pneumonia, ViralPneumoniaRespiratory Tract InfectionsInfectionsVirus DiseasesCoronaviridae InfectionsNidovirales InfectionsRNA Virus InfectionsLung DiseasesRespiratory Tract Diseases

Intervention Hierarchy (Ancestors)

Viral VaccinesVaccinesBiological ProductsComplex Mixtures

Study Officials

  • Russell Ware

    Children's Hospital Medical Center, Cincinnati

    PRINCIPAL INVESTIGATOR
  • Julie Ware

    Children's Hospital Medical Center, Cincinnati

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
observational
Observational Model
CASE ONLY
Time Perspective
PROSPECTIVE
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

May 17, 2021

First Posted

May 20, 2021

Study Start

February 19, 2021

Primary Completion

May 10, 2022

Study Completion

August 31, 2023

Last Updated

July 30, 2025

Record last verified: 2025-07

Data Sharing

IPD Sharing
Will not share

Locations