Croup in kids occurs due to a viral infection in the vocal cords and the trachea (windpipe). The infection causes swelling and narrowing of the upper airway, making it difficult for air to pass ...

However, the most common virus to cause croup is parainfluenza. Because it is caused by viruses, croup is usually accompanied by symptoms such as fever, congestion or runny nose. Croup is caused ...

Adults and older children undergoing reinfection probably constitute an important source of infection for susceptible infants. For this reason it would be desirable to develop immunoprophylactic ...

Despite important successes, there are no treatments for many common viruses, and antiviral drug resistance is a problem as well. Hospitalized parainfluenza and influenza infections in particular ...