The heading is a quote by Dr Herbert Shelton, USA  

"Likewise, contemporary vaccination coverage is explored in Schuster et al., which relates to the ongoing measles outbreak in Berlin and its disproportionate effects in young adults.

While some articles address specific vaccination concerns, all wrestle with the issues that arise when even a small subset of vaccine-hesitant or resistant individuals potentially undermine immunization efforts."

It doesn't seem to have occurred to the author of this piece that "the disproportionate effects in young adults" due to the measles is vaccine-related because now that most children are vaccinated against the measles it is young adults who are now most at risk once the Mickey Mouse vaccine-induced "immunity" has worn off.  Measles are not a problem in healthy children but can indeed cause serious complications in teenagers and young adults.  

An increasing number of people refuse vaccinations because their children have suffered a vaccine-injury or because they have become aware that vaccination is a fraud and a particularly vile form of organised crime as parents' protective instincts towards their children are taken advantage of in order to poison their children for profit under the pretext of "immunising" them. Only, vaccines are designed, made and administered not to prevent, but to promote ill-health.