for his leadership too. pfizer—biontech have said three doses of their covid—i9 vaccine have been able to neutralise the omicron variant in laboratory tests. the manufacturers say that while two doses offer lower protection against omicron, a third, booster dose increased the neutralising antibodies significantly. pfizer—biontech say that, if needed, they could deliver an omicron—specific vaccine by march. the results match a south africa study, but a laboratory analysis in frankfurt found a reduced antibody response to omicron even after three shots. we can now speak to saad omer who's director of the yale institute for global health. a very good evening to you there in connecticut. what do we know about how much protection the vaccines offer against this new variant? i must caution these are early