Randomized multicenter study of the infection prevention comparing influenza vaccine to placebo for the summer epidemic of influenza in Okinawa

Randomized multicenter study of the infection prevention comparing influenza vaccine to placebo for the summer epidemic of influenza in Okinawa - Study of the influenza vaccine for the summer epidemic of influenza

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000010643

Enrollment

440

Registered

2013-05-08

Start date

2013-05-16

Completion date

Unknown

Last updated

2026-06-29

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

Conditions

influenza

Interventions

Injection one time of the influenza vaccine subcutaneously. Injection one time of saline subcutaneously.

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1) The doctor or the nurse engaging in the Internal or the pediatric, the emergency section 2) Enable to obtain the written informed consent.

Exclusion criteria

Exclusion criteria: 1) Persons who have had the influenza within 8 weeks prior to the randomization. 2) Persons who have injected the influenza vaccine within 8 weeks prior to the randomization. 3) Persons who have have underlying disorder such as cardiac disorder, renal disorder, liver disorder, blood disorder or development disorders. 4) Pregnant female 5) Persons who have the risk of allergies to influenza vaccine.

Design outcomes

Primary

Measure	Time frame
The effect of the vaccine to prevent influenza for 3 years	—

Countries

Japan

Contacts

Public ContactYoshihiro Takayama

Okinawa Chubu Hospital Division of Infectious Diseases

hiro-t@umin.net098-973-4111

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026