Measles is returning to the impoverished and wealthy world[1], from the United States[2] to the European Union[3], and is creating old problems that seemed to be overcome[4]. Why?
The explanation for the resurgence of measles is seemingly simple: the COVID-19 pandemic largely disrupted the vaccination schedule, leaving a portion of the world's population unvaccinated.
Furthermore, the controversy surrounding COVID-19 vaccines and the compulsory policy regarding them increased "vaccine hesitancy" and also contributed to the decline in vaccination coverage[5].















