Yellow Fever Vaccine in Patients With Rheumatic Diseases

NCT ID: NCT03430388

Last Updated: 2019-04-26

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

600 participants

Study Classification

INTERVENTIONAL

Study Start Date

2018-01-31

Study Completion Date

2019-02-24

Brief Summary

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According to World Health Organization (WHO), since December 2016, Brazil is showing a significant increase in cases of yellow fever in humans. In view of this, vaccination is suitable for residents and travelers to the risk area. However, for immunosuppressed patients there is a formal recommendation not to vaccinate with live virus vaccine. On the other hand, the safety and efficacy of the vaccine has been demonstrated in patients with HIV, and safety and seroconversion have also been demonstrated in patients with rheumatic disease who were inadvertently revaccinated for yellow fever. Faced with the impossibility of leaving the high-risk area for some patients the vaccination could be released to only those who have low level of immunosuppression as suggested by some recommendations of medical societies. The availability of a fractional vaccine in the State of São Paulo, which has proved its efficacy, opens the possibility of exposure to a lower number of copies of the virus in the first exposure of immunosuppressed patients, allowing, if necessary, a safer revaccination, after 28 days to obtain of a more effective immunogenic response. The objectives of the study are to evaluate the immune response of the immunization with fractional yellow fever vaccine (neutralizing antibodies) in patients with systemic autoimmune rheumatic diseases residing in a high-risk area. Secondarily, evaluate the possible association between immunogenicity and vaccination with: demographic data, clinical and laboratory activity of the disease in patients with chronic rheumatic diseases, evaluate the curve of viremia and report adverse events. Patients and healthy controls will be vaccinated for yellow fever in the Immunization Center of Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo (HC-FMUSP). The patients' screening for exclusion and inclusion criteria will be done at the rheumatology outpatient clinic after medical evaluation. For the controls will be the routine screening of the Immunization Center. The vaccination protocol will be a fractional dose of the yellow fever vaccine on day D0 for both groups. Patients will be evaluated on day D0, D5, D10, D30-4 and D365 and controls only on days D0, D10, D30-45 and D365 for aspartate aminotransferase (AST), alanine aminotransferase (ALT), platelets, urea and creatinine, immunoglobulin M (IgM) by immunofluorescence for Yellow Fever, viremia, autoantibodies.

Detailed Description

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Conditions

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Systemic Lupus Rheumatoid Arthritis Spondyloarthritis Inflammatory Myopathy Systemic Sclerosis Mixed Connective Tissue Disease Takayasu Arteritis Granulomatosis With Polyangiitis Sjogren's Syndrome Juvenile Idiopathic Arthritis Juvenile Dermatomyositis

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

PREVENTION

Blinding Strategy

NONE

Study Groups

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Rheumatic diseases patients

Vaccination against Yellow Fever, fractional dose (0,1mL) of 17D vaccine

Group Type ACTIVE_COMPARATOR

Yellow Fever vaccine (17D)

Intervention Type BIOLOGICAL

Vaccination against Yellow Fever, fractional dose (0,1mL) of 17D vaccine

Healthy controls

Vaccination against Yellow Fever, fractional dose (0,1mL) of 17D vaccine

Group Type ACTIVE_COMPARATOR

Yellow Fever vaccine (17D)

Intervention Type BIOLOGICAL

Vaccination against Yellow Fever, fractional dose (0,1mL) of 17D vaccine

Interventions

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Yellow Fever vaccine (17D)

Vaccination against Yellow Fever, fractional dose (0,1mL) of 17D vaccine

Intervention Type BIOLOGICAL

Eligibility Criteria

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Inclusion Criteria

* Rheumatic disease under low immunosuppression (hydroxychloroquine, sulfasalazine or methotrexate plus prednisone up to 7,5mg/day or leflunomide plus prednisone up to 7,5mg/day),
* Resident in high risk área for Yellow Fever

Exclusion Criteria

* Active disease
* Primary immunodeficiency
* History of anaphylactic response to vaccine components or egg allergy
* Living outside the risk area
* Do not meet criteria for low immunosuppression
* History of previous immunization with the yellow fever vaccine
* History of live virus vaccine up to 4 weeks before
* Individuals who do not agree to participate in the study and/or whose parents do not agree to participate in the study
Minimum Eligible Age

2 Years

Maximum Eligible Age

60 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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University of Sao Paulo General Hospital

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Eloisa Bonfa, MD, PhD

Role: PRINCIPAL_INVESTIGATOR

Rheumatology Division of Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, SP - Brazil

Locations

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Rheumatology Division of Hospital das Clínicas da Faculdade de Medicina da Universidade de Sao Paulo

São Paulo, São Paulo, Brazil

Site Status

Countries

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Brazil

References

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Other Identifiers

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VFAReumatoHC

Identifier Type: -

Identifier Source: org_study_id

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