What are the advantages of the nasal-spray flu vaccines LAIV ?
The nasal spray flu vaccines are highly safe and offer protection against influenza viruses. Since they mimic the natural route of infection, they also give protection against slightly changed viruses. LAIVs have been shown to exhibit a phenomenon called herd immunity, which means, even the unvaccinated people who come in contact with vaccinated people may also get some protection. This has been seen especially with school children who have received vaccines. Their family members were also protected. Since the vaccines induce immunity in the nose, apart from immunity in blood, the protection is by two way defense. Moreover, it is a painless administration.
