Adherence to Palivizumab Prophylaxis

"Participants were given the vaccination appointment card and participants received a telephone call every month two days before their appointment. Participants were reminded that they have a set appointment and were asked to plan the day of their appointment as detailed below. The standard script used in the telephone call in every hospital was as follows:Hello, we are calling you because you are enrolled in the palivizumab prophylaxis research program. As you know, you have a vaccination appointment on \[enter date\] at \[enter time\]. To help you plan your day of appointment, we have a few short questions.~1. At your appointment day, will you be coming to the hospital from home, or will you need to get permission from your workplace?~2. What kind of transportation do you plan to take to come to the hospital at your appointment day?~3. At what time do you plan to leave home or work to come to the hospital?"

Participants were given the vaccination appointment card and participants were included in a messaging group (on Whatsapp or SMS, depending on the participant's preference) where, twice a month they received a message informing them on RSV, on the additional risks caused by RSV infection in children with congenital heart diseases and on the benefits of adherence to the prophylaxis program. These messages also involved statements about the high number of patient families that kept their appointments in the previous month.

Participants were given the vaccination appointment card.