If you want to ask every person in an anonymized database for consent, yes

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This is not about consent but about databases that already exist and that could be anonymized easily, treasure troves of data for medical research, but even anonymously that data can’t be used because of stupid red tape

Privacy matters, but it is really not good in its current shape. For example, it seriously hinders scientific research into contagious diseases because a lot of data of patients is incredibly hard to get or work on. There’s a lot more that could be done against epidemics if it wasn’t for the GDPR in its current shape.