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Covid: Does it matter how long you wait for a second vaccine?

Countries offer different gaps between Covid vaccines: typically a three to four week gap or a 12 week gap.

Does one provide better protection than another? 成人快手 Health correspondent James Gallagher reports on a new study.

(Image: Nurse injecting Covid-19 vaccine into a patient, Credit: Getty Images.)

4 minutes

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Health CheckWhen to have your second vaccine dose?

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