Chickenpox (Varicella) Information and vaccination resources
(Updated 2/23/26)
This page provides general information about chickenpox (varicella) and vaccination. It is summarized from public health guidance from the Hawaiʻi State Department of Health (DOH) and the U.S. Centers for Disease Control and Prevention (CDC).
Hawaiʻi DOH Disease Reporting Line: (808) 586-4586
What is CHickenpox?
Chickenpox is a highly contagious illness caused by the varicella-zoster virus (VSV). It spreads easily in homes, schools, and other settings.
Symptoms
An itchy rash that turns into fluid-filled blisters and then scabs
Fever, tiredness, reduced appetite, or headache (these may begin before the rash)
Symptoms commonly appear 10-21 days after exposure.
How does it spread?
Through the air when an infected person coughs or sneezes
Through direct contact with blister fluids
A person is typically contagious from 1-2 days before the rash begins until all blisters have scabbed over.
Why it matters?
Many people recover without serious problems, but complications can occur, especially for infants, adolescents and adults, pregnant individuals, and people with weakened immune systems.
What to do if you think you were exposed or are sick
If you or your child may have chickenpox, or you were exposed and aren’t sure you’re protected:
Contact a healthcare provider for guidance
Stay home and avoid close contact with others while contagious to help prevent spread
Vaccination: where to get it and why
CDC recommendation
The CDC recommends chickenpox (varicella) vaccination for children and for adolescents/adults who are already immune. Vaccination helps prevent illness and helps protect communities where outbreaks can occur.
general guidance on vaccinations
Children: 2 doses (first in early childhood and a second before school age)
Older children, teens, and adults who are not immune: typically 2 doses (a healthcare provider can advise timing)
Why Get vaccinated?
Reduces the chance of getting chickenpox
Helps prevent severe illness and complications
Can help reduce spread in schools and other community settings
Where you can get vaccinated
A doctor’s office (pediatrician or primary care provider (PCP))
Community clinics or health centers
Pharmacies (availability may vary by age)
Your local or state health department
Find a participating location near you that provides vaccines using the National Vaccine Locator Website.
Some individuals should not receive the varicella vaccine, such as those that are pregnant and individuals with certain immune system conditions. A healthcare provider can help determine what is appropriate.
After exposure
If you were exposed and are not immune, a healthcare provider may recommend steps such as vaccination after exposure. Contact a provider promptly for advice.
