'probably a good idea to contain infection fro spreading, as although usually harmless to most people, chickenpox (varicella) can be deadly to those with poor immune symptoms and the unborn child. To be fair, most people are infectious before theyrealise they are ill.
ps it's called "chicken pox" 'cos the pathopeumonic vesicles are said to resembe a chick pea.
smart rrse
