Repellents for loiasis prevention

Evaluation of arthropod repellents in their efficacy to avoid Chrysops bites in a high transmission region for loiasis in Gabon

Status

Active, not recruiting

Phases

Phase 3

Study type

Interventional

Source

PACTR

Registry ID

PACTR202406779622099

Enrollment

204

Registered

2024-06-04

Start date

2024-05-12

Completion date

Unknown

Last updated

2026-09-14

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

Conditions

Loiasis

Interventions

Icaridin 20 percent lotion

DEET 30

Ethanol

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Age >18 years Written informed consent No acute illness

Exclusion criteria

Exclusion criteria: Inability to provide written informed consent

Design outcomes

Primary

Measure	Time frame
Number of blood meal attempts by Chrysops fly	—

Secondary

Measure	Time frame
Number of landings on unexposed body parts covered by clothing Number of landings on exposed skin body parts Number of seconds each landed Chrysops on exposed skin. Impact of time on preventive efficacy of repellent, impact of sex on preventive efficacy, impact of climate data on protective efficacy, impact of infection status on protective efficacy	—

Countries

Gabon

Contacts

Public ContactMichael Ramharter

Head of Department

ramharter@bnitm.de+49402853800

Outcome results

None listed

Source: PACTR (via WHO ICTRP) · Data processed: Sep 19, 2026