Live attenuated influenza vaccine

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Live Attenuated Influenza Vaccine

The Live Attenuated Influenza Vaccine (LAIV), pronounced as /laɪv ætˈɛn.ju.eɪ.tɪd ˈɪn.flu.ən.zə vækˈsiːn/, is a type of Influenza Vaccine that contains live but weakened forms of the Influenza Virus. The term originates from the Latin words 'vivus' meaning 'alive' and 'attenuare' meaning 'to weaken'.

Overview

The LAIV is designed to stimulate an immune response in the body that is similar to the response produced by a natural influenza infection, but without causing the disease itself. This is achieved by using a weakened form of the virus that is unable to replicate efficiently in the warmer temperatures found in the lungs and other parts of the body.

Usage

The LAIV is typically administered via a nasal spray rather than an injection, making it a needle-free alternative to the traditional Inactivated Influenza Vaccine. It is approved for use in individuals between the ages of 2 and 49 who are not pregnant and do not have certain health conditions.

Effectiveness

The effectiveness of the LAIV can vary from season to season and can be influenced by factors such as the age and health status of the person receiving the vaccine, as well as the match between the viruses used in the vaccine and the circulating Influenza Strains.

Related Terms

See Also

External links

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