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.
If the child is younger than 12 months of age, these underlying causes must also be considered because, although croup can present as early as 3 months of age, it is more likely to occur in children over twelve months.Conclusion. The croup syndromes are quite variable in course and symptoms (TABLE) .iral croup is usually seen in patients ages 3 months to 5 years. It is caused by respiratory viruses mainly parainfluenza type 1 (DISCUSSION) , but also parainfluenza type 3, influenza A, adenovirus, respiratory syncytial virus, echovirus, and mycoplasma. Males are affected more often than females.