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 affects about 15% of children, and usually presents between the ages of 6 months and 5â6 years. It accounts for about 5% of hospital admissions in this population. In rare cases, it may occur in children as young as 3 months and as old as 15 years.t is a relatively common condition that affects about 15% of children at some point, most commonly between 6 months and 5â6 years of age. It is almost never seen in teenagers or adults. Before the advent of vaccination, croup was frequently caused by diphtheria, and was often fatal.