Chickenpox Cases on the Rise in Our Community — What Parents Need to Know

Since the beginning of 2026, our practice has seen a noticeable increase in chickenpox (varicella) cases among children in Robbinsville and the surrounding Mercer County area. We are sharing this information to help families recognize symptoms early and take the right next steps.

What Is Chickenpox?

Chickenpox, caused by the varicella-zoster virus, is a highly contagious illness most commonly seen in children. It spreads easily through direct contact with the rash, through saliva, or by breathing in viral particles from an infected person's cough or sneeze. Even a brief, casual exposure — sharing a classroom, a waiting room, or a playdate — can be enough to pass the virus along.

Incubation Period

After exposure to the virus, it typically takes 10 to 21 days before a child develops symptoms. A child is contagious from 1 to 2 days before the rash appears and remains contagious until all blisters have dried and crusted over — usually about 5 to 7 days after the rash begins.

Common Symptoms

Chickenpox typically starts with mild general symptoms, followed quickly by the telltale rash. Early symptoms include fever (usually 101–102°F), fatigue, headache, loss of appetite, and sore throat.

The rash progresses in three stages: red or pink bumps that appear first on the face, chest, and back; fluid-filled blisters that become very itchy; and crusts and scabs as blisters dry out. Children typically develop 200 to 500 spots.

When to Call Us Right Away

Please contact our office immediately or seek urgent care if your child is under 1 year old, has a fever above 102°F lasting more than 4 days, has difficulty breathing, has redness or warmth around skin sores, or is unusually drowsy or confused. Do not bring a child with active chickenpox to our office without calling first — we will arrange a safe way to see them.

The Varicella Vaccine

The most effective way to prevent chickenpox is vaccination. Children receive two doses of the varicella vaccine: the first at 12 to 15 months of age, and the second at 4 to 6 years of age. Two doses provide approximately 98% protection against chickenpox.

If your child missed one or both doses, it is not too late — catch-up vaccination is available. Please call our office at (609) 808-3123 to check your child's vaccination records and schedule any missed doses.

What to Do If Your Child Has Chickenpox

Keep your child home until all blisters have fully crusted over (typically 5–7 days after rash onset). Call our office before coming in. Ease the itch with cool baths and keep fingernails short to prevent scratching. Manage fever with acetaminophen (Tylenol) — do not give aspirin or ibuprofen to children with chickenpox unless directed by your doctor. Keep them hydrated and watch for signs of serious complications.

For complete guidance on symptoms, home care, and when to call our office, read our full community health article on our website.