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Safety, Tolerability, and Immune Response of ACAM3000 Modified Vaccinia Ankara (MVA) Smallpox Vaccine in Adults

NCT00079820 · Status: COMPLETED · Phase: PHASE1 · Type: INTERVENTIONAL · Enrollment: 110

Last updated 2014-01-13

No results posted yet for this study

Summary

The purpose of this study is to gather information on the safety and the effectiveness of an investigational vaccine for the prevention of smallpox disease. Smallpox was one of the major causes of death and sickness through the first half of the 20th century, but a global program of smallpox eradication resulted in the elimination of the natural disease. The last cases of smallpox in the United States occurred in 1949 in Texas. Today, only laboratory workers who work with smallpox-related viruses, military personnel, and health care workers are vaccinated.

Historically, individuals in the US were vaccinated with a product such as Dryvax®, which contains the virus vaccinia in the same family as smallpox. This virus could promote immunity to smallpox, but not produce the disease itself. Although effective, these vaccines are not safe to use in people with atopic dermatitis (eczema, allergic immune response to allergens), children less than 1 year of age, and people with a compromised immune system, occurring in certain diseases (HIV positive individuals and AIDS), and following treatment with certain types of drugs. It is important to find a safe vaccine that can be used to protect people who cannot receive routine vaccinia-based smallpox vaccine.

The vaccine in this study is known as Modified Vaccinia Ankara or MVA vaccine. It is the objective of this study to find out if MVA vaccine is safe and effective in providing immunity to smallpox. The effectiveness of this vaccine will be measured in two ways. The first way is to find out if there are specific antibodies in your blood following MVA vaccination. Antibodies are chemicals your body produces to fight smallpox virus.

The second way is to see whether or not there is a typical skin reaction following vaccination with a traditional smallpox vaccine, given about three months after vaccination with the MVA vaccine. The typical reaction in an unvaccinated person to smallpox vaccine is formation of a blister or "pox" which occurs at the site of vaccination. In a person with immunity to smallpox the skin reaction is much less, and typically consists of a little swelling at the site of vaccination.

Conditions

Interventions

BIOLOGICAL

ACAM3000 MVA Vaccine

Two subcutaneous injections of MVA3000 smallpox vaccine, separated by 28 days

Sponsors & Collaborators

  • Sanofi Pasteur, a Sanofi Company

    lead INDUSTRY

Principal Investigators

  • Medical Director · Sanofi Pasteur Inc

Study Design

Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
TRIPLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
31 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2004-04-30
Primary Completion
2006-10-31
Completion
2006-10-31

Countries

  • United States

Study Locations

More Related Trials

Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT00079820 on ClinicalTrials.gov