Seasonal Influenza Vaccination Reminders for Children With High-risk Conditions

University of Michigan3,618 enrolled

Overview

The objective of this study was to assess the feasibility and effectiveness of using a statewide immunization information system (IIS) to send seasonal influenza vaccine reminders from Local Health Departments (LHDs), targeting children with high-risk conditions.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

HEALTH_SERVICES_RESEARCH

Masking

SINGLE

Enrollment

3,618

Conditions

Seasonal Influenza Vaccination

Interventions

Mailed influenza vaccination reminder noticeBEHAVIORAL

Influenza vaccination reminder sent by postal mail

Eligibility

Sex: ALLMin age: 24 MonthsMax age: 60 Months

Medical Language ↔ Plain English

Inclusion Criteria: * children, 24-60 months * current or previous enrollment in Medicaid (Michigan) * presence of at least 1 chronic condition, as indicated by the Michigan Care Improvement Registry (MCIR) * resident of Kalamazoo, Ottawa, or Kent counties (Michigan) Exclusion Criteria: * receipt of influenza prior to notification date * ineligible for reminder/recall notification in the Michigan Care Improvement Registry (MCIR)

Locations (1)

University of Michigan, Child Health Evaluation and Research Unit

Ann Arbor, Michigan, United States

Outcomes

Primary Outcomes

seasonal influenza vaccination

Receipt of 1 or more dose of seasonal influenza vaccine, either trivalent inactivated influenza vaccine (TIV) or live attenuated influenza vaccine (LAIV)

Time frame: up to 4 months following reminder notification

Secondary Outcomes

invalid mailing address

Postal mailing address determined to be invalid for mail delivery, either by physical return of mailed reminder notification, or through the United States Postal Service's National Change of Address (NCOA) process

Time frame: up to 4 months following reminder notification

Data from ClinicalTrials.gov

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