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Emergency COVID-vaccine approvals pose a dilemma for scientists. It could complicate efforts to study long-term outcomes, such as safety, how long protection lasts and whether the jab prevents infection or just the disease

Emergency COVID-vaccine approvals pose a dilemma for scientists. It could complicate efforts to study long-term outcomes, such as safety, how long protection lasts and whether the jab prevents infection or just the disease

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Dernier de Zouhair Souissi