Respiratory syncytial virus (RSV) is a contagious viral infection that is common among young children and infants. It can also affect older adults and people with weakened immune systems. While most cases of RSV are mild and cause no more than cold-like symptoms, it can be dangerous for certain groups of people.

The primary symptom of RSV is a severe cough, which can last anywhere from 2 weeks to 3 months. Other symptoms include wheezing and rapid breathing, trouble breathing, headache, sore throat, runny nose, body aches and low fever. Some children may not develop any symptoms at all.

RSV is typically spread through contact with an infected person's secretions, such as saliva or mucus. Droplets coming from the nose or mouth of an infected person can also spread the virus. Because of this, it is important to practice good hand washing and avoid close contact with someone who is sick with RSV.

In most cases, children and infants who contract RSV will experience mild symptoms. If the symptoms become severe, medical attention should be sought immediately. Symptoms to watch for in young children include high fever, listlessness, poor feeding and problems breathing.

If left untreated, children with RSV can develop more serious complications. These complications can include bronchiolitis, which is an infection of the small airways of the lungs, and pneumonia, which is an infection of the lungs. These two conditions can be life-threatening, especially for infants and young children.

For people who are at risk of developing serious symptoms, such as those with weakened immune systems, the elderly and those with lung problems, doctors may prescribe an antiviral medication. This medication helps to reduce the severity of symptoms.

In most cases, RSV symptoms can be managed at home. In particular, it is important to ensure that the child drinks plenty of fluids to avoid dehydration. Sponging with lukewarm water can help reduce fever and discomfort. In the case of more severe symptoms, it is important to seek medical attention immediately.

Overall, RSV is a common virus among young children and infants. While most cases are mild, it is important to be aware of the symptoms and to seek medical attention if they become more severe.