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CompletedNCT01653392Updated Mar 15, 2024

BioThrax® (Anthrax) Vaccine in Pregnancy Registry

An observational study in Pregnancy Complications, Pregnancy Outcome and Congenital Abnormalities, sponsored by Emergent BioSolutions. Completed at 1 site in United States. Open to female participants, including healthy volunteers. Per ClinicalTrials.gov, last updated 2024-03-15.

Sponsored by Emergent BioSolutions · Observational

Study type
Observational
Model
Case-control
Time perspective
Prospective
Enrollment
98
Sex
Female
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Study summary

The purpose of this study is to determine if inadvertent receipt of the BioThrax vaccine during pregnancy is independently associated with adverse maternal, pregnancy, or infant health outcomes.

Read the detailed description

This study will use a convenience sample and passive referral to enroll participants.

For the maternal outcome portion of the study, pregnant active duty women who consent to join the registry are expected to complete several surveys over the course of their pregnancy, including an initial enrollment survey, a follow-up survey at or after the 20th week of pregnancy, and a post-delivery survey at two weeks after their delivery due date (unless a pregnancy loss is reported in the 20 week survey).

Outcomes among infants born to women enrolled in the Registry whose pregnancies result in a livebirth will be assessed with a survey during the post-delivery contact, again at 4 months of age, with a final follow-up when the infant reaches one year of age.

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Conditions studied

  • Pregnancy Complications
  • Pregnancy Outcome
  • Congenital Abnormalities

Keywords

  • Maternal Mortality
  • Obstetric Labor, Premature
  • Eclampsia
  • Pre-Eclampsia
  • Abortion, Spontaneous
  • Diabetes, Gestational
  • Pregnancy, Ectopic
  • Hydatidiform Mole
  • Fetal death
  • Live birth
  • Still birth
  • Premature Birth
  • Sex ratio
  • Birth weight
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In context

Pregnancy Complications

411 studies on the registry are indexed under Pregnancy Complications; 113 are open to participants now.

This study's enrollment of 98 is below the median of 400 across 198 observational studies indexed under Pregnancy Complications.

Browse Pregnancy Complications studies →

Lead sponsor

Emergent BioSolutions is the lead sponsor of 47 studies on the registry; 7 are open to participants now.

Of its 11 completed or terminated interventional studies of FDA-regulated products, 7 (64%) have results posted.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
Child (0–17), Adult (18–64), Older adult (65+)
Sexes eligible
Female
Accepts healthy volunteers
Yes
Sampling method
Non-probability sample

Study population

Active duty female service members who received one or more doses of BioThrax® while pregnant, with the onset of pregnancy defined as the first day of the last menstrual period (LMP) All live born infants born to women who join the registry.

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Female active duty service member
  • Received one or more dose of BioThrax while pregnant, with the onset of pregnancy defined as the first day of the last menstrual period.

Exclusion criteria

Exclusion Criteria:

  • Non-service member, non-active duty pregnant female.
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Study design

Observational model
Case-control
Time perspective
Prospective
Enrollment
98 participants (actual)
Patient registry
No

Groups and cohorts

  • Anthrax Vaccine Adsorbed

    Active duty women who received one or more doses of BioThrax while pregnant, with the onset of pregnancy defined as the first day of the last menstrual period, and all live born infants born to women who join the registry.

    Biological: Observational Intervention

Interventions

  • BiologicalObservational Intervention

    This is an observational study, therefore no interventions are specified.

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What researchers measure

Primary outcomes

  1. Pregnancy Outcomes

    Pregnancy outcomes measured include live birth, still birth, spontaneous abortion, elective termination, ectopic pregnancy, or molar pregnancy Note: Twin or higher order multiple pregnancies may have more than one outcome.

    Time frame: Up to 44 weeks

  2. Maternal Outcomes

    Maternal outcomes measured include maternal death, pre-eclampsia/eclampsia, preterm labor, and gestational diabetes.

    Time frame: Up to 44 weeks

  3. Infant Outcomes

    Infant outcomes measured include birth defects, infant sex ratios, preterm birth, and birth weight.

    Time frame: Up to 1 year of age

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Study locations

1 site
  • Naval Health Research Center
    San Diego, California 92106, United States
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References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 15, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT01653392
Collaborators
Naval Health Research Center
Responsible party
Sponsor
First posted
Jul 31, 2012
Start date
Jul 2012
Primary completion
Feb 2020
Completion
Feb 2020
Last update
Mar 15, 2024

Study contacts

Natalie Wells, MD
principal investigator · Naval Health Research Center

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Mar 2024. You cannot join it, but the record below documents what was studied.

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