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CompletedNCT00928577Updated Apr 4, 2024

Safety Surveillance Cohort Study of Vaccinia Vaccine (ACAM2000®)

An observational study in Smallpox, sponsored by Emergent BioSolutions. Completed at 4 sites in United States. Open to participants aged 17 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2024-04-04.

Sponsored by Emergent BioSolutions · Observational

Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
14,108
Ages
17 Years and older
Sex
All
01

Study summary

Primary Objectives:

  • To compare the rates of myopericarditis (subclinical, suspected, probable, or confirmed) in deploying military subjects who received ACAM2000® vaccine to rates among subjects positioned to deploy who would be personally eligible to receive ACAM2000 vaccine but do not receive ACAM2000 vaccine due to recency of prior vaccination (as determined by DoD healthcare providers) or due to conditions or characteristics of their contacts.
  • To identify cases of subclinical myopericarditis in deploying military subjects who received ACAM2000 vaccine.

Secondary Objectives:

  • To compare the rates of severe and serious dermatologic adverse events observed in deploying military subjects who received ACAM2000® vaccine to rates among subjects positioned to deploy who would be personally eligible to receive ACAM2000 vaccine but do not receive ACAM2000 vaccine due to recency of prior vaccination (as determined by DoD healthcare providers) or due to conditions or characteristics of their contacts.
  • To compare the rates of severe and serious neurological adverse events observed in deploying military subjects who received ACAM2000® vaccine to rates among subjects positioned to deploy who would be personally eligible to receive ACAM2000 vaccine but do not receive ACAM2000 vaccine due to recency of prior vaccination (as determined by DoD healthcare providers) or due to conditions or characteristics of their contacts.
  • To compare the rates of adverse events observed in subjects approximately 10 days following their ACAM2000® vaccination to rates among subjects positioned to deploy who would be personally eligible to receive ACAM2000 vaccine but do not receive ACAM2000 vaccine due to recency of prior vaccination (as determined by DoD healthcare providers) or due to conditions or characteristics of their contacts.
  • To evaluate potential risk factors associated with the development of confirmed, probable, and/or suspected ACAM2000-associated myopericarditis.
Read the detailed description

This is a prospective safety surveillance study in a US military Department of Defense (DoD) population. Military subjects either naive to smallpox immunization and have received ACAM2000® vaccine or who have previously been immunized with a vaccinia vaccine, usually Dryvax®, will be enrolled into the study.

No vaccine will be administered as part of this study.

02

Conditions studied

  • Smallpox

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Keywords

  • Smallpox
  • Smallpox Vaccine
  • Vaccinia virus
  • Military
03

In context

Smallpox

74 studies on the registry are indexed under Smallpox; 5 are open to participants now.

Browse Smallpox 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.

04

Who can participate

Ages eligible
17 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes
Sampling method
Non-probability sample

Study population

Participants in Cohort 1 are vaccinia vaccine naive and had received ACAM2000® vaccine as part of their Service Member readiness.

Participants in Cohort 2 did not receive ACAM2000® vaccine as part of their Service Member readiness process because they are still protected by previous vaccinia vaccination or are ineligible for current ACAM2000 vaccination either because of recency of prior vaccinia vaccination or for reasons solely attributable to conditions or characteristics of their contacts (such as a healthy soldier who is married to someone with a contraindicated condition).

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

  • Written informed consent obtained prior to the conduct of any study-related procedures.
  • Male and Female military personnel positioned for active deployment.
  • Participant naïve to previous smallpox vaccination and received the ACAM2000 vaccine (Cohort 1), OR, Participant has not received ACAM2000 vaccine within the prior 3 years, AND is ineligible for current ACAM2000 vaccination either because of recency of prior vaccinia vaccination or for reasons solely attributable to conditions or characteristics of their contacts (such as a healthy soldier who is married to someone with a contraindicated condition) (Cohort 2).

Exclusion criteria

Exclusion Criteria :

  • Subjects judged by the investigator as unlikely to understand the scope of the study and/or unlikely to be able to be compliant with the study procedures and visits.
  • Participation in any other studies involving investigational or marketed products within 30 days prior to Visit 1.
05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
14,108 participants (actual)

Groups and cohorts

  • ACAM2000 Smallpox Vaccine Group

    Participants are vaccinia vaccine-naive and have received ACAM2000 Smallpox vaccine as part of their Service Member readiness process.

  • Other vaccinia vaccine Group

    Participants did not receive ACAM2000 Smallpox vaccine as part of their Service Member readiness process because they are still protected by previous vaccinia vaccination or are ineligible for current ACAM2000 vaccination either because of recency of prior vaccinia vaccination or for reasons solely attributable to conditions or characteristics of their contacts (such as a healthy soldier who is married to someone with a contraindicated condition).

06

What researchers measure

Primary outcomes

  1. The percentage and rate per 1,000 of participants with subclinical, suspected, probable, or confirmed myopericarditis following vaccination with either ACAM2000® Smallpox vaccine or other vaccinia vaccine.

    Time frame: Day 10 post-vaccination

Secondary outcomes

  1. Number of participants reporting dermatologic adverse events of rash following vaccination with either ACAM2000 or other vaccinia vaccine

    Dermatologic adverse events of rash are those that meet the following criteria: * Serious rashes persisting more than 48 hours that are distant from the vaccination site and * associated with systemic symptoms, or * involving mucous membranes.

    Time frame: Day 10 post-vaccination

07

Study locations

4 sites
  • Twentynine Palms, California 92278, United States
  • Fort Campbell North, Kentucky 42223, United States
  • Fort Bliss, Texas 79906, United States
  • Fort Hood, Texas 76544, United States
08

References and documents

Publications

  • Faix DJ, Gordon DM, Perry LN, Raymond-Loher I, Tati N, Lin G, DiPietro G, Selmani A, Decker MD. Prospective safety surveillance study of ACAM2000 smallpox vaccine in deploying military personnel. Vaccine. 2020 Oct 27;38(46):7323-7330. doi: 10.1016/j.vaccine.2020.09.037. Epub 2020 Sep 20. PubMed 32967791 ↗
09

Timeline

Tracking since Sep 25, 2026
Not marked actual or estimatedDates not marked actual or estimated

The record gives a start of Dec 2008, a primary completion of Dec 2014 and a completion of Dec 2015. It does not say whether these dates are actual or estimated.

How these figures are worked out, and which studies are left out of them.

Registered
Jun 25, 2009
First posted
Jun 26, 2009
Start
Dec 2008
Primary completionActual
Dec 2014
CompletionActual
Dec 2015
Last update
Apr 4, 2024
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Apr 4, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT00928577
Responsible party
Sponsor
First posted
Jun 26, 2009
Start date
Dec 2008
Primary completion
Dec 2014
Completion
Dec 2015
Last update
Apr 4, 2024

Study contacts

Medical Director
study director · Emergent BioSolutions

Oversight

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

Not currently enrolling

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

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