The Investigation of Methods to Capture Acute Respiratory and Gastrointestinal Infections of Children Aged 1 to 3 Years

Further study details:

Recruitment takes place in child care centres (CCC) with children under the age of 3 years. In cooperation with the CCC, in the first step, the study is introduced to parents by leaflets and posters. In the second step, the study is personally introduced at the CCC with a brief presentation during an appointment or during the time parents pick up their child. Interested parents are handed out the consent forms and a first questionnaire with contact details to be sent back to the study team. After receipt of the signed informed consent, parents are contacted to schedule the appointment for the demonstration of the first nasal swab and for handing out the materials. From this day on, the 3-months study period starts for the parents. During these three months parents fill out the symptom diary on a daily basis and collect anterior nasal swabs and stool samples on a monthly basis from the study child independent from symptoms, as well as one sample if respiratory or gastrointestinal symptoms occur. 50% of the study participants are randomly chosen for the reminder subgroup; they receive 2-weekly reminders to continue the symptom diary by text messages or postcards.

The diary and the specimen will be mailed to the Helmholtz Centre for Infection Research where they will be stored and analyzed for the nasal and gut microbiome. The nasal swabs taken at the time of an infection will be tested for respiratory viruses, using a polymerase chain reaction (PCR) panel for 5 most common respiratory viruses (adeno-, influenza-, metapneumo-, picorna- and respiratory syncytial virus). All other nasal swabs will be tested for ß-actin and 16s rRNA as indicator for the quality of the nasal swab and the nasal swabs taken by the parents will then be compared with the nasal swabs taken by the trained study staff in a non-inferiority study.

After the study period of 3 months parents will be asked about the feasibility and acceptance of the tasks with questionnaires and interviews (face to face and focus groups).