Scientists have called on governments to act against the population's future mistrust of the future vaccine against the coronavirus.

In France, the survey shows strong mistrust with only 59% acceptance rate of a future vaccine. 

Scientists have called on governments to act against the future mistrust of populations in the future vaccine against Covid-19, which could hamper ideal vaccination coverage, according to their study published Tuesday.

"In most of the 19 countries studied, the current levels of acceptance of a vaccine against Covid-19 are insufficient to meet the requirements of community immunity," warn the authors of the study conducted in June and published in the journal Nature Medicine.

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72% of the 13,400 people questioned in the 19 countries declared that they would be vaccinated if "an available vaccine against the Covid-19 demonstrates its effectiveness and its safety", while 14% answer that they would refuse and as many as 14% show hesitant.

The acceptance rate is changing strongly, with three countries below 60%, France (58.8%), Poland (56.3) and Russia (54.8), and three others exceeding 80%, China, Brazil and South Africa.

"Reluctance to vaccine is strongly linked to lack of trust in government" 

"We found that the problem of vaccine reluctance is strongly linked to a lack of confidence in the government," commented one of the study coordinators, Jeffrey V. Lazarus, researcher at the Institute of Barcelona Global Health (ISGlobal).

According to the study's authors, "it is increasingly clear that a transparent, evidence-based policy and clear and precise communication will be required from all stakeholders", starting with governments. 

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To conduct effective prevention campaigns, they call for "carefully explaining the level of effectiveness of a vaccine, the time required for protection (with multiple doses, if necessary) and the importance of coverage at the population scale to obtain community immunity ".

And this, especially since "anti-vaccination activists are already campaigning in several countries against the need for a vaccine, some of them outright denying the existence of Covid-19".

According to another study published last week in the British journal Royal Society Open Science, up to a third of the population in some countries is likely to believe in false information and conspiracy theories on Covid-19.