HZV should not be given to patients who have a history of which condition?

HZV, or herpes zoster vaccine, is a live attenuated vaccine used to prevent shingles. It is contraindicated in patients with a history of anaphylaxis to gelatin because this vaccine contains gelatin as a stabilizer. When a person has an anaphylactic reaction to a substance, it indicates a severe hypersensitivity to that allergen. In cases of gelatin allergy, administering the vaccine could potentially trigger a serious allergic reaction.

While patients with allergies to eggs, latex, or tree nuts may experience certain precautions with other vaccines, they are generally not contraindications for receiving the herpes zoster vaccine. Each vaccine has specific components that may lead to allergic reactions, and understanding these components is crucial for ensuring patient safety and preventing adverse effects during vaccination.