However, in severe cases, RSV infection can spread to the lower respiratory tract, causing pneumonia or bronchiolitis, warns the Mayo Clinic.
Severe signs and symptoms may include:
- Severe cough
- Wheezing — a high-pitched noise that’s usually heard on breathing out (exhaling)
- Rapid breathing or difficulty breathing — the person may prefer to sit up rather than lie down
- Bluish colour of the skin due to lack of oxygen (cyanosis).
As the Mayo Clinic points out, because RSV and COVID-19) are both types of respiratory viruses, some symptoms of RSV and COVID-19 can be similar.
“In children, COVID-19 often results in mild symptoms such as fever, runny nose and cough,” explains the health body.