This study tests a new **oral rotavirus vaccine** called ROTAVAC 5D in babies from Chile who are 6-8 weeks old. **Rotavirus** is a virus that causes severe diarrhea in children. The study is **double-blind**, meaning neither the doctors nor the families know if the baby gets the real vaccine or a **placebo** (a fake treatment). The study will have 5,800 babies, with half getting the vaccine and half getting the placebo. Some babies will have blood tests to see how well their body fights the virus.

• The study lasts about 12 months, and regular check-ups are needed.
• Participation is voluntary, and families must give consent.
• Babies must not have had a rotavirus vaccine before.

It's important to know that babies with certain health issues, like known allergies to the vaccine, serious illnesses, or previous treatments with certain medicines, cannot join. If your baby has diarrhea on the day of enrollment, they might need to wait. The study checks for safety and how well the vaccine works. Participation helps doctors learn more about preventing rotavirus. 🦠💉