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but we need clarity, we need consistency, we need our kids in school and the staff to be able to teach them. some experts worry whether lateral flow tests will detect enough positive cases, especially when infections are running high. but government advisers say the research is a breakthrough, considering how much learning has already been disrupted. naomi grimley, bbc news. a new study has concluded that an eight week gap between the first and second doses of the pfizer biontech vaccine is the best for building immunity against covid. the pitch study found it allows the body s immune system to produce more infection fighting antibodies. dr thushan de silva is a senior clinical lecturer in infectious diseases at the university of sheffield and co author of this study. he explained how they d reached these conclusions. the first thing to say is that these are immunology results and we await data on the clinical vaccine effectiveness of the different dosing strategies, so we looked at 50

Scottish governmentDaily lateral flow testsBbc newsNaomi grimleyPfizer biontech vaccinePitch studyThushan de silvaImmune systemCo authorUniversity of sheffieldBuilding immunity against covidHealth care workersVaccine effectivenessDosing strategiesImmunology results