# Vaccine Hyporesponse in Healthy Elderly Participants (MK-0000-131 AM2)

> **NCT01119703** · — · COMPLETED · sponsor: **Merck Sharp & Dohme LLC** · enrollment: 174 (actual)

## Conditions studied

- Vaccine Response Impaired

## Interventions

- **BIOLOGICAL:** Tetanus & Diphtheria booster vaccine (Td)
- **BIOLOGICAL:** TwinrixTM [Hepatitis A Inactivated & Hepatitis B (Recombinant) Vaccine]
- **BIOLOGICAL:** Dukoral® Traveler's Diarrhea Vaccine (WC/rBS)

## Key facts

- **NCT ID:** NCT01119703
- **Lead sponsor:** Merck Sharp & Dohme LLC
- **Sponsor class:** INDUSTRY
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2010-07
- **Primary completion:** 2011-11
- **Final completion:** 2011-11
- **Target enrollment:** 174 (ACTUAL)
- **Last updated:** 2015-12-29


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT01119703

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT01119703, "Vaccine Hyporesponse in Healthy Elderly Participants (MK-0000-131 AM2)". Retrieved via AI Analytics 2026-05-28 from https://api.ai-analytics.org/clinical/NCT01119703. Licensed CC0.

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