Immunity against vaccine-preventable diseases in the homeless population in Germany

Status

Recruiting

Phases

Unknown

Study type

Observational

Source

DRKS

Registry ID

DRKS00016336

Enrollment

500

Registered

2019-02-22

Start date

2019-06-01

Completion date

Unknown

Last updated

2025-04-07

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

B15 B18 A36 A35 B05 B26 B06

Interventions

Group 1: Single time blood collection to determine immunity status against hepatitis A, B, diphtheria, tetanus, measles, mumps, rubella, varicella in 500 homeless people in Germany.

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Inclusion criteria

Inclusion criteria: Homelessness currently or in the last 12 months Minimum age of 18 years Suitability to donate blood (max. 30ml) Ability to consent

Exclusion criteria

Exclusion criteria:

Design outcomes

Primary

Measure	Time frame
The primary outcome is to determine the status of immunity as a percentage for the following diseases in the homeless population in Germany: Hepatitis A Hepatitis B Diphtheria Tetanus Measles Mumps Rubella Varicella	—

Secondary

Measure	Time frame
The secondary outcome is the determination of anti-Hbc and Hbs antigen in order to be able to identify an existing chronic hepatitis B in the homeless. Thereby, a distinction can be made between vaccination and infection. Biographical data are requested using case history forms, so that any existing vaccination gaps can be associated with them. We will also examine whether there is an association between age, gender, origin, illicit drug use, duration of homelessness, incarceration and pre-existing conditions and vaccination gaps.	—

Measure

Time frame

The secondary outcome is the determination of anti-Hbc and Hbs antigen in order to be able to identify an existing chronic hepatitis B in the homeless. Thereby, a distinction can be made between vaccination and infection. Biographical data are requested using case history forms, so that any existing vaccination gaps can be associated with them. We will also examine whether there is an association between age, gender, origin, illicit drug use, duration of homelessness, incarceration and pre-existing conditions and vaccination gaps.

—

Countries

Germany

Contacts

Public ContactGregor Paul

Klinik für Allgemeine Innere Medizin, Gastroenterologie, Hepatologie, Infektiologie und PneumologieKatharinenhospital Stuttgart/Klinikum Stuttgart

gr.paul@klinikum-stuttgart.de0711 278 35401

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Feb 4, 2026