Chickenpox (Varicella) Vaccine

Chickenpox (Varicella) Vaccine

Varicella is designed to protect against the highly contagious viral infection known as chickenpox, which can cause severe illness or death without immunization. Like all vaccines, it carries a small risk of side effects — some of which may be eligible for compensation under the National Vaccine Injury Compensation Program (VICP).

In rare cases, an abnormal immune response can occur after vaccination. The body’s immune system, activated by the vaccine, may mistakenly attack healthy tissue or trigger inflammation in the nervous system. This immune-mediated reaction can lead to neurological or autoimmune complications, though such events are extremely uncommon compared to the millions of doses administered safely every year.

Warning signs that can appear after vaccination may include:

  • Persistent rash or skin irritation near the injection site

  • Fever, fatigue, or swollen lymph nodes

  • Numbness, weakness, or tingling sensations (possible neurological involvement)

  • Severe allergic reactions such as anaphylaxis (hives, swelling, or difficulty breathing)

  • Shoulder or arm pain from improper injection (SIRVA)

Most people experience only mild effects such as soreness or a mild rash and recover fully within days. However, when a serious injury or reaction does occur, it’s important to seek medical attention immediately.

If you or your child developed a severe or lasting reaction after receiving a varicella vaccination, you may qualify for compensation under the VICP. These claims have a strict time limit, so contact our vaccine injury law firm today to begin your claim and ensure your rights are protected.

  • The varicella vaccine protects against the varicella-zoster virus, which causes chickenpox.

    It contains a live attenuated (weakened) virus, meaning the virus has been modified so it can’t cause serious illness but still prompts the body to build immunity.

    Other components include stabilizers, trace amounts of gelatin and neomycin (to preserve and protect the vaccine), and small amounts of sugars and salts to maintain its effectiveness.

    • Contains live attenuated varicella-zoster virus (Oka/Merck strain).

    • Includes stabilizers and preservatives to keep the vaccine potent.

    • May contain trace components like gelatin and neomycin.

  • The varicella vaccine helps the immune system recognize and fight off chickenpox if exposure occurs later in life.

    It prevents severe illness, complications, and outbreaks. In most people, two doses provide lifelong protection.

    • Prevents chickenpox and its complications such as pneumonia or encephalitis.

    • Reduces community spread and protects those who cannot be vaccinated.

    • Also helps prevent shingles later in life by reducing latent infection risk.

  • Rare adverse reactions can occur. The National Vaccine Injury Compensation Program (VICP) recognizes several potential vaccine-related injuries, including:

    • Anaphylaxis: A severe allergic reaction that can cause hives, swelling, or difficulty breathing.

    • SIRVA (Shoulder Injury Related to Vaccine Administration): Pain or limited motion in the shoulder due to incorrect injection technique.

    • Vasovagal Syncope: A fainting episode that can lead to falls or secondary injuries shortly after vaccination.

  • If you may have suffered a vaccine-related injury, the most important step is to seek medical care right away.

    Early treatment can help reduce symptoms, prevent complications, and create clear medical documentation that supports your recovery and any future claim.

    Once you’ve received care, hire a Vaccine Injury Compensation Program (VICP) lawyer to handle your case.

    VICP claims follow a unique federal process, and having a lawyer who understands this system ensures your claim is filed correctly and on time.

    Best of all, attorney fees are paid by the program, not by you. Getting the right help early protects both your health and your legal rights, without costing you anything, whether you win or lose your claim.

    • The varicella vaccine was licensed in the U.S. in 1995.

    • Two doses are about 98% effective in preventing chickenpox.

    • Since introduction, U.S. chickenpox cases have dropped over 90%.

    • Serious side effects occur in less than one per million doses.

    • Millions of children and adults safely receive the vaccine each year.

    If you or your child experienced a severe reaction after receiving the varicella vaccine, you may qualify for compensation under the VICP.

    Contact our firm today to discuss your options and protect your right to recovery.

A person is receiving a vaccine injection in their upper arm, administered by a healthcare professional wearing black gloves. There are two vials of blood on the table, one with red liquid and the other with purple liquid, along with a medical syringe and a thermometer.