yes it is contegues virus becteria both involved
It can be in serious cases. My mother had to take me to the emergency room when I was toddler because I almost suffocated to death from it. Most of the time is it only a cough though and will disappear in a few days to a week. Talk to your pediatrician if you are concerned about your child's symptoms.
yes croup can kill because anything can kill
i dont now
an inflamed larynx