Abstract
Abstract Issue Globally, between 2016 and 2018, low vaccination coverage rates led to an increase of measles cases and related deaths. The WHO European Region reported a total of 83540 measles cases and 74 deaths in 2018, versus the 5273 cases and 13 deaths in 2016, with WHO global estimates reporting 333445 cases. In order to contrast these outbreaks, the European Vaccine Action Plan 2015-2020 states that the ideal immunization coverage for measles must be 95%. Although, this rate is not reached and maintained everywhere, thus one debated solution is to adopt compulsory vaccination plans rather than recommended. Our aim is to analyse if compulsory policies may increase coverage. Description Between 2014 and 2018 3 countries (Italy, France and California) changed their measles vaccination policies from recommended to compulsory to fight low immunization. In order to describe the effects of this action, we compared their measles coverage rates in 2014 and 2018 together with other 12 OECD countries rates who adopt both recommendation and obligation, evaluating the trend variations. Data were collected from OECD's, WHO's and Ministries of Health's documents. Results After the introduction of obligation, California (91% in 2014; 95% in 2018) and Italy (87% to 94%) coverage rates increased, while France's reduced (91% to 90%). Of other mandatory countries, only Australia showed an increase (94% to 95%); totally, 37.5% mandatory countries showed an increase among the analysed ones. Through the same period, 50% of analysed countries with recommendation maintained rates over 95%, 10% increased, while 40% remained below 95%. Lessons Even if mandatory vaccinations can lead to a sharp increase of coverage in a short time in response to emergency situations, the causes and solutions of hesitancy are more complex than law enforcement. Some countries without obligation show rates constantly above 95% throughout the years, demonstrating that other measures can be taken to fight low immunization. Key messages Apart from estimates coming from WHO and OECD, it is difficult to find extensive and official information about the application and the effectiveness of vaccination policies in different countries. Low immunization coverage rates rely on different causes (information, religion, personal beliefs, trust), thus the application of mandatory vaccination alone is not sufficient to fight hesitancy.
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