15 doctors weighed in:
How long is chicken pox contagious? 
15 doctors weighed in

Dr. Martin Raff
Internal Medicine - Infectious Disease
9 doctors agree
In brief: Varies
Patients (usually children) are infectious to others for roughly 2 days before the blisters occur and then until the blisters have formed scabs covering them completely, about 4 to 5 days.

In brief: Varies
Patients (usually children) are infectious to others for roughly 2 days before the blisters occur and then until the blisters have formed scabs covering them completely, about 4 to 5 days.
Dr. Martin Raff
Dr. Martin Raff
Thank
Dr. Mark Diamond
Pediatrics
7 doctors agree
In brief: Around 10 days
Generally 1-2 days prior the onset of the rash.
Then until there are no new ones and all the old lesions are scabbed over.

In brief: Around 10 days
Generally 1-2 days prior the onset of the rash.
Then until there are no new ones and all the old lesions are scabbed over.
Dr. Mark Diamond
Dr. Mark Diamond
Thank
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