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CHICKENPOX

PORTAL OF ENTRY

Direct contact or by the respiratory tract

HOST

It is common on childhood, but adults can be infected too

CAUSATIVE AGENT

The varicella-zoster virus (VZV)

METHOD OF TRANSMISSION

Inhaling the air of an infected person or direct contact

PORTAL OF EXIT

Through the air, or direct contact with mucus, saliva, or fluid

RESERVOIR

Humans