Follow-Up of Respiratory Infections in Schleswig-Holstein

Follow-Up of Respiratory Infections in Schleswig-Holstein - FRISH

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

DRKS

Registry ID

DRKS00034927

Enrollment

300

Registered

2024-09-11

Start date

2024-07-03

Completion date

Unknown

Last updated

2026-03-30

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

Conditions

J10.1

Interventions

Group 1: Adults with influenza infection: UKSH Kiel Standardized recording of the following parameters at defined points in time (6-12 months after infection, then annually) - Medical history - Cardi

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Inclusion criteria

Inclusion criteria: - Proven influenza infection at least 6 months ago - Current residence in Schleswig-Holstein - Written or electronic consent from the participant

Exclusion criteria

Exclusion criteria: - Infection with SARS-CoV-2 between influenza infection and the planned on-site visit - Current reinfection with influenza or acute infection with SARS-CoV-2

Design outcomes

Primary

Measure	Time frame
Presence of persistent symptoms or functional limitations A systematic documentation of sequelae is conducted within an infection epidemiological approach. This involves capturing both relevant sequelae-related morbidities, which must be systematically characterized morphologically and functionally for all relevant organs, as well as infection epidemiological characteristics such as immunization status and environmental/lifestyle factors that may mitigate disease progression. For this purpose, the standardized collection of the parameters mentioned under Arm 1 is carried out at defined time points.	—

Measure

Time frame

Presence of persistent symptoms or functional limitations A systematic documentation of sequelae is conducted within an infection epidemiological approach. This involves capturing both relevant sequelae-related morbidities, which must be systematically characterized morphologically and functionally for all relevant organs, as well as infection epidemiological characteristics such as immunization status and environmental/lifestyle factors that may mitigate disease progression. For this purpose, the standardized collection of the parameters mentioned under Arm 1 is carried out at defined time points.

—

Secondary

Measure	Time frame
Follow-up symptoms or chronic comorbidities and their association with quality of life, health status and use of the healthcare system	—

Countries

Germany

Contacts

Public ContactJan Heyckendorf

UKSH Kiel, Klinik für Innere Medizin I

jan.heyckendorf@uksh.de0431 500 19004

Outcome results

None listed

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