The number of vaccine-hesitant families in Turkey was reported to be 23 000 in 2017, although an increasing trend is noted. 6 The World Health Organization (WHO) declared vaccination hesitancy to be one of the 10 main threats to human health globally in 2019. 7 Since the turn of the century, the number of measles cases reached peak levels in 2018-2019 in the European continent.
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