trix to the president's medical adviser. dr. fauci informed the president while it will take approximately two more weeks to of definite information on the transmiss billty and other characteristics of the variant. he believes existing vaccines provide a degree of protection against covid-19. boosters for fully vaccinated individuals provide the strongest available protection from covid. the president is expected to give an update on the situation. on monday. also on monday. travel restrictions to several southern african nations including south africa. will go into effect. >> joining me now. cnn senior political analyst. always great to have you with us. just as president biden was starting to see progress in efforts to fight the pandemic,