Similar to bad cold. Rsv usually causes the same symptoms as a bad cold, such as: cough; stuffy or runny nose; a mild sore throat; earache; fever. Babies with RSV may also have no energy; act fussy or cranky; be less hungry than usual. Some children have more serious symptoms, like wheezing and respiratory distress which can lower the level of oxygen in the blood. These symptoms require emergent evaluation!