Influenza Virus Vaccine, Live Attenuated
Influenza, commonly known as the flu, is a contagious respiratory illness caused by influenza viruses. The influenza virus vaccine, live attenuated, is a vaccine designed to protect against influenza infection. This article provides comprehensive information about this vaccine, including its uses, mechanism of action, dosage, side effects, precautions, and drug interactions.
Uses & Indications
The influenza virus vaccine, live attenuated, is approved for the prevention of influenza disease caused by influenza A and B viruses in healthy, non-pregnant individuals aged 2 through 49 years. This vaccine is particularly useful for individuals who prefer a needle-free option, as it is administered intranasally.
How It Works
The influenza virus vaccine, live attenuated, contains weakened (attenuated) live influenza viruses. These viruses are capable of replicating in the nasal mucosa, stimulating an immune response without causing significant illness. This immune response prepares the body to defend against future infection by wild-type influenza viruses. It is important to note that because this is a live vaccine, it cannot cause the flu.
Dosage and Administration
The influenza virus vaccine, live attenuated, is administered intranasally. The recommended dose is 0.2 ml, divided equally between the two nostrils. The vaccine is typically administered as a single dose annually, before the onset of influenza season.
Side Effects
Common side effects associated with the influenza virus vaccine, live attenuated, include:
Runny nose
Nasal congestion
Sore throat
Headache
Muscle aches
Fever (low-grade)
These side effects are generally mild and self-limiting.
Warnings and Precautions
The influenza virus vaccine, live attenuated, should not be administered to:
Pregnant women
Children younger than 2 years of age
Adults 50 years of age or older
Individuals with certain chronic medical conditions, such as asthma, heart disease, or diabetes
Individuals with weakened immune systems
Individuals with a history of severe allergic reaction to any component of the vaccine
Individuals who have received another live attenuated vaccine within the past four weeks should not receive the influenza virus vaccine, live attenuated.
Drug Interactions
Certain medications, such as immunosuppressants and aspirin-containing products, may interact with the influenza virus vaccine, live attenuated. It is important to inform your healthcare provider about all medications you are currently taking, including over-the-counter drugs and supplements.
FAQs
Q: How effective is the influenza virus vaccine, live attenuated?
A: The effectiveness of the influenza virus vaccine, live attenuated, varies from year to year, depending on the match between the vaccine strains and the circulating influenza viruses.
Q: Can the influenza virus vaccine, live attenuated, give me the flu?
A: No, the influenza virus vaccine, live attenuated, contains weakened viruses that cannot cause the flu. However, it can cause mild side effects similar to flu symptoms.
Q: Who should get the influenza virus vaccine, live attenuated?
A: Healthy, non-pregnant individuals between the ages of 2 and 49 can receive the live attenuated influenza vaccine. It is particularly suitable for those seeking a needle-free option.
Q: What should I do if I experience side effects after receiving the vaccine?
A: Most side effects are mild and resolve on their own. However, if you experience severe or persistent side effects, contact your healthcare provider.
Q: How often should I get the influenza virus vaccine, live attenuated?
A: The influenza virus vaccine, live attenuated, is typically administered annually before the onset of influenza season.
This information is intended for educational purposes only and should not be considered medical advice. Always consult with a qualified healthcare professional for diagnosis and treatment of any medical condition.
