Herd immunity is an important defense against outbreaks and has shown success in regions with satisfactory vaccination rates. Importantly, even small deviations from protective levels can allow for significant outbreaks due to local clusters of susceptible individuals, as has been seen with measles over the past few years. Therefore, vaccines must not only be effective, but vaccination programs must be efficient and broadly adopted to ensure that those who cannot be directly protected will nonetheless derive relative protections.
Scooped by
Giuseppe Fattori
onto Medici per l'ambiente - A cura di ISDE Modena in collaborazione con "Marketing sociale". Newsletter N°34 |