Chickenpox (Varicella)
A highly contagious infection caused by varicella-zoster virus.
Symptoms and what to notice
Itchy blister-like rash, fever, tiredness, headache, and loss of appetite.
How long can it last?
The rash commonly lasts about four to seven days; people are contagious before and until lesions crust over.
How serious is Chickenpox (Varicella)?
Usually mild in children, but pneumonia, brain inflammation, bloodstream infection, hospitalization, and death can occur.
Treatment and management
Symptom care is common; antivirals may be recommended early for people at higher risk. Avoid aspirin in children with chickenpox.
Is there a vaccine—and who should receive it?
CDC recommends two doses: usually at 12–15 months and 4–6 years. People age 13+ without immunity generally receive two doses at least 28 days apart.
Official U.S. guidance
Read the current CDC guidance for Chickenpox (Varicella) →
Cost: Patient cost varies by insurance, provider, location, and eligibility. Many recommended vaccines are covered with no out-of-pocket cost under qualifying plans, and eligible children may receive vaccines through the Vaccines for Children program. CDC price lists are purchasing benchmarks—not guaranteed patient prices. CDC price context.