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Text Message Reminders for Influenza Vaccine in Pregnancy

Text Message Reminders for Influenza Vaccine in Pregnancy

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT02428738
Enrollment
317
Registered
2015-04-29
Start date
2013-11-30
Completion date
2014-03-31
Last updated
2019-02-22

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

Conditions

Pregnancy

Keywords

Influenza Vaccine, Text Message

Brief summary

Influenza virus accounts for numerous cases (epidemics) of respiratory illnesses each year worldwide and affects people of all ages. These epidemics typically occur in the winter months, and can result in substantial morbidity and mortality in persons at risk. Pregnant women may be more susceptible to morbidity and mortality associated with influenza infection. This increased risk may result from several factors including increased heart rate, stroke volume, and oxygen consumption, decreased lung capacity, and changes in immunologic function. Immunization of women during pregnancy can help to prevent infection in the woman herself and may also offer protection to the infant in two ways: by the passage of antibodies from mother to the fetus during pregnancy, and by preventing infection in the mother and therefore decreasing the infant's exposure risk after birth. In Canada, the National Advisory Committee on Immunization (NACI) recommends the vaccine for pregnant women who are expected to deliver during influenza season because they will become household contacts of their newborn. Ideal timing of vaccination occurs in October or November since influenza outbreaks typically occur throughout the winter months. Despite the Canadian and American guidelines for influenza vaccination during pregnancy, it is unclear how many women are offered and/or actually receive the vaccine while pregnant. There is, however, evidence that women will accept the vaccine if offered. Specifically, in the Women's Health Care Centre at St. Michael's Hospital, it was found that 42% of women not only accepted but also received the influenza vaccination when offered. Innovative techniques will be required to continue to increase vaccination rates among vulnerable populations, including pregnant women. The purpose of the present study is to determine if the use of electronic reminders (text messages) increases the likelihood of receiving the influenza vaccine among pregnant women.

Interventions

None listed

Sponsors

Unity Health Toronto
Lead SponsorOTHER

Study design

Observational model
CASE_CONTROL
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
FEMALE
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Pregnant Woman * Ages 18 and over * Working cellular telephone with the ability to receive text messages * Ability to speak or understand English

Exclusion criteria

* Age less than 18 * Inability to speak or understand English * Not possessing a working cellular telephone with text messaging capability * Presence of any contraindications to vaccination (such as egg allergy or prior adverse reaction to the vaccine) * Women who have already received the vaccine during this influenza season

Design outcomes

Primary

MeasureTime frameDescription
Prevalence of Influenza Vaccination of those who do receive text message reminders compared to those who do not.Up to 5 monthsTo determine the percentage of women who receive the influenza vaccine during pregnancy and also received text message reminders, relative to women who do not receive text messages.

Secondary

MeasureTime frameDescription
Patient characteristics affecting liklihood of receiving vaccineUp to 5 monthsPatient characteristics (e.g. race/ethnicity, education level, family income, number of prior pregnancies, history of receiving the vaccine in the past) affecting the likelihood of receiving the vaccine among those who receive reminders.

Countries

Canada

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026