Varicella, also known as chickenpox, is a highly contagious disease caused by the varicella-zoster virus. It is characterized by an itchy rash that appears on the body, face, and scalp. The rash usually lasts about 5-7 days.
The varicella vaccine is a safe and effective way to prevent chickenpox. It is recommended for all children at 12-15 months of age, with a second dose given at 4-6 years of age. The vaccine is also recommended for adults who have not had chickenpox or who have not been vaccinated.
The original varicella vaccine contained gelatin, which is a protein derived from animal collagen. Gelatin is used in vaccines as a stabilizer, which helps to keep the vaccine safe and effective. However, some people are allergic to gelatin.
In 1999, a gelatin-free varicella vaccine was licensed in the United States. This vaccine is made with a different stabilizer, so it is safe for people with gelatin allergies.
Studies have shown that the gelatin-free varicella vaccine is just as safe and effective as the original vaccine. In one study, the rate of allergic reactions to the gelatin-free vaccine was 0.04%, compared to 0.12% for the original vaccine.
If you have a gelatin allergy, talk to your doctor about getting the gelatin-free varicella vaccine. This vaccine is a safe and effective way to protect yourself from chickenpox.
Here are some additional things to know about the gelatin-free varicella vaccine:
- It is given as two shots, 4-8 weeks apart.
- It is usually well-tolerated, with mild side effects such as pain, redness, and swelling at the injection site.
- It is important to get both shots of the vaccine to get the best protection.
- The vaccine is not 100% effective, so it is still possible to get chickenpox even if you are vaccinated. However, the vaccine will make the illness milder if you do get it.
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If you have questions about the gelatin-free varicella vaccine, talk to your doctor.