One.
The word "donor" is not typically used for chickenpox. The word "carrier" is used to indicate someone who is contagious for chickenpox but doesn't yet have symptoms.
The word chickenpox does not have an antonym. Diseases typically don't have antonyms.
I am a parent, and neither I nor my friends who are parents think chickenpox is a bad word. Perhaps your parents have a different point of view; ask them why they think chickenpox is a bad word.
You do not capitalize chickenpox in a sentence. The exception is if the word is the first in the sentence.
my 2nd favourite word
No. You only get shingles's if you have had chickenpox. No chickenpox no shingles's.
All chickenpox are contagious...there is only one kind...
Having chickenpox confers immunity regardless of the severity or mildness of the illness.
Chickenpox vaccine isn't needed if you've had chickenpox in the past. Shingles vaccine is recommended for patient 60 and over to prevent shingles.
Chickenpox is one of eight herpes viruses known to infect humans and vertebrates.
Cowpox and chickenpox are different illnesses caused by different viruses. One can't turn into the other.