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Immunogenicity and safety of Japanese encephalitis vaccine among adults aged 40-69 years old in Zhongwei, Ningxia

Immunogenicity and safety of Japanese encephalitis vaccine among adults aged 40-69 years old in Zhongwei, Ningxia

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
ChiCTR
Registry ID
ChiCTR2500103235
Enrollment
Unknown
Registered
2025-05-27
Start date
2020-05-20
Completion date
Unknown
Last updated
2025-06-02

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

Conditions

Japanese Encephalitis

Interventions

1 dose of live attenuated JE vaccine:None
2 doses of JE inactivated vaccine were given at intervals of 7 days:None
The interval between 2 doses of inactivated JE vaccine was 28 days:None
Control group:None

Sponsors

Ningxia Center for Disease Control and Prevention
Lead Sponsor

Eligibility

Sex/Gender
All
Age
40 Years to 69 Years

Inclusion criteria

Inclusion criteria: 1. Healthy adults aged 40-69 years (November 1950-November 1979) with no contraindications to vaccination; 2. Live locally, have good compliance, and can participate in the whole process.

Exclusion criteria

Exclusion criteria: 1. Previous JE; 2. Previous vaccination with Japanese encephalitis vaccine; 3. Confirmed or suspected immune system impairment, congenital or acquired immunodeficiency; 4. Have used immunoglobulin or other blood products within 3 months before the investigation, and injected or taken oral corticosteroids or other immunomodulatory drugs within 6 weeks before the investigation; 5. Reject participants.

Design outcomes

Primary

MeasureTime frame
Seroconversion proportion;—

Countries

China

Contacts

Public ContactZhang Ying

Ningxia Center for Disease Control and Prevention

zy_2216@126.com+86 188 9501 6226

Outcome results

None listed

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