How can i avoid being contaminated by chickenpox, my cousin at home has one, were living on a small apartment.can you give me tips?

Distance: Maintain distance as it may spread thru respiratory droplets nd thry contact.Also good handwashing.

Vaccine.: The chickenpox vaccine is highly effective; also, early treatment with Acyclovir if you do catch chickenpox will limit the spread of lesions and occurrence of complications. Chickenpox is famous for spreading quickly by air even in large buildings; avoiding it in a small apartment is unlikely.