jonathan vigliotti, cbs news, rancho cucamonga, california. >> reporter: i'm charlie d'agata in londonwhere europe is in the grip of a deadly third wave of covid cases, filling i.c.u.s and sending towns and cities in italy back into lockdown. in a further blow to the vaccine rollout there, france, germany, italy, and today sweden have become among 16 european nations that have halted the use of the oxford-astrazeneca shot after reports of blood clotting. but astrazeneca says a review of 17 million people in the u.k. and europe who have received the vaccine, found fewer than 40 developed blood clots, lower than would be expected to occur in the general population. today, even the european medicines agency, the f.d.a. of europe, urged that vaccinations should continue. >> even if this association is causal, which i think most people doubt, then the evidence is still very strongly if you want to live, the best thing you can do is have the vaccine. >> reporter: the benefits far outweigh the risks. >> absolutely, absolutely. >> reporter: but widespread distrust of the oxford vaccine is the