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Letters: Why there’s still reason to hope for an effective Covid-19 vaccine

Letters: Why there’s still reason to hope for an effective Covid-19 vaccine

The Telegraph - Letters to the Editor

SIR – I believe I am immune to smallpox, diphtheria, whooping cough, tetanus and other diseases, as a result of vaccination. I do not expect to have antibodies in my blood, as I have not been exposed to any of these infectious organisms recently. However, if I am, my long-lived memory T cells, which …

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