Public Health England has updated the Green Book with clarification around the schedule following the emergence of Delta variant, advice on cautions and contraindications, and co-administration advice. More evidence also added on vaccine effectiveness and mixed schedules. In line with JCVI guidance, one of these changes includes recommending an interval of 8 to 12 weeks between doses of all the available COVID-19 vaccines. This consistent interval should be used for all two dose vaccines to avoid confusion and simplify booking, and will help to ensure a good balance between achieving rapid and long-lasting protection.
COVID-19: the green book, chapter 14a updated
02 Jul 2021
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