Season One Edit. Beckett's initial relationship with Castle was strained because she viewed him as immature and reckless. She suspected (correctly) that Castle was using his research as an excuse to pursue her, and only tolerated his presence at the request of Captain Montgomery.
What causes croup in children. Croup in children is most often caused by the parainfluenza virus, a respiratory virus not related to the flu. But it can also be caused by other respiratory viruses including the flu. Yes, croup is contagious.
Croup is usually mild and lasts less than a week. More severe cases are due to difficulty breathing caused by swelling in the upper part of the windpipe. 11. 85% of children examined at the emergency room have mild croup.iral croup is the most common type and is caused by viruses, such as adenoviruses (cold viruses) and influenza (flu) viruses. Viral croup (laryngotracheitis) and recurrent croup (spasmodic) are difficult to distinguish between clinically as both can be associated with viral infections and are similar in appearance.