Vaccination Coverage and Level of Protection in Patients at Risk
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ClinicalTrials.gov Identifier: NCT03820752 |
Recruitment Status :
Completed
First Posted : January 29, 2019
Last Update Posted : October 23, 2020
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The purpose of this study is to determine
- vaccination coverage of recommended vaccines (routine childhood vaccines and vaccines against seasonal flu and pneumococci) in children with chronic diseases (allergy, cystic fibrosis, diabetes mellitus type 1, congenital heart disease, immunocompromised and solid organ transplant patients)
- the level of protection against measles, mumps, rubella and pertussis in children with chronic diseases.
- vaccination coverage of recommended vaccines (diphtheria, tetanus, pertussis and vaccines against seasonal flu and pneumococci) in adults with chronic diseases (nephropathy, diabetes mellitus, COPD, heart failure, HIV and solid organ transplant patients)
- the level of protection against diphtheria, tetanus and pertussis in adults with chronic diseases.
Condition or disease |
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Diabetes Chronic Kidney Disease Allergy Cystic Fibrosis Heart Disease |

Study Type : | Observational |
Actual Enrollment : | 2179 participants |
Observational Model: | Cohort |
Time Perspective: | Retrospective |
Official Title: | Study of the Vaccination Coverage and Level of Protection Against Vaccine-preventable Infectious Diseases in Pediatric and Adult Risk Patients in a University Hospital |
Study Start Date : | October 2014 |
Actual Primary Completion Date : | June 2017 |
Actual Study Completion Date : | August 30, 2020 |

Group/Cohort |
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Pediatric chronically ill patients
Through a questionnaire parents of chronically ill patients will be asked about the vaccination status of all recommended vaccines of their child. Also questions on disease, therapy and sociodemographic factors that can influence vaccination coverage will be asked. A blood sample to determine antibodies against measles, mumps, rubella and pertussis will be drawn from children who consent to sampling. The following groups of patients will be questioned: diabetes, allergy, congenital heart disease, cystic fibrosis, immunodeficiency and transplant patients, cancer patients. |
Adult chronically ill patients
Through a questionnaire chronically ill patients will be asked about their vaccination status of diphtheria, tetanus,pertussis, flu, pneumococcal and hepatitis B vaccine(s). Also questions on disease, therapy and sociodemographic factors that can influence vaccination coverage will be asked. A blood sample to determine antibodies against diphtheria, tetanus and pertussis will be drawn. The following groups of patients will be questioned: diabetes, chronic kidney disease, heart failure, COPD, immunodeficiency and transplant patients, HSCT patients. |
- Proportion of pediatric chronically ill patients correctly vaccinated with the hexavalent (DTaP-IPV-Hib-HBV), pneumococcal, rotavirus, MMR and MenC vaccine according to the Belgian recommended vaccination schedule. [ Time Frame: 5 years ]number of patients vaccinated compared to the entire group
- Proportion of adult chronically ill patients correctly vaccinated diphtheria, tetanus, pneumococci, hepatitis B and influenza according to Belgian recommended vaccination schedule [ Time Frame: 5 years ]number of patients vaccinated compared to the entire group
- Proportion of pediatric patients with antibodies against measles, mumps, rubella, diphtheria, tetanus and pertussis in children included in the study and who provided a blood sample [ Time Frame: 5 years ]Determination of antibodies against measles, mumps, rubella and pertussis
- Proportion of adult patients with antibodies against diphtheria, tetanus and pertussis. [ Time Frame: 5 years ]Determination of antibodies against diphtheria, tetanus and pertussis
Biospecimen Retention: Samples Without DNA

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Ages Eligible for Study: | 2 Years to 85 Years (Child, Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Sampling Method: | Non-Probability Sample |
Inclusion Criteria:
- pediatric patients: be at least 2 years of age and maximum 16 ye
- adults patients: at least 18 years of age
- have a chronic condition
Exclusion Criteria:
-

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03820752
Belgium | |
UZ Leuven | |
Leuven, Belgium, 3000 |
Principal Investigator: | Corinne Vandermeulen, MD, PhD | KU Leuven |
Responsible Party: | Prof. dr. Corinne Vandermeulen, Principal Investigator, KU Leuven |
ClinicalTrials.gov Identifier: | NCT03820752 |
Other Study ID Numbers: |
UZVACC |
First Posted: | January 29, 2019 Key Record Dates |
Last Update Posted: | October 23, 2020 |
Last Verified: | October 2020 |
Cystic Fibrosis Kidney Diseases Renal Insufficiency, Chronic Heart Diseases Urologic Diseases Cardiovascular Diseases Renal Insufficiency |
Pancreatic Diseases Digestive System Diseases Lung Diseases Respiratory Tract Diseases Genetic Diseases, Inborn Infant, Newborn, Diseases |