Though very uncommon, the unique type of thromboses seen in dozens who got the shot has experts paying attention; some are urging caution, while others say tiny risk is worth it

Decision follows reports of a small number of unusual blood clots in people who received shot, in latest setback for vaccine seen as crucial for Europe, global inoculations

European Medicines Agency says there is 'no evidence' to support restricting use of shots against coronavirus, even though Germany has banned its administration to those below 60

No change in pharma firm's figure for prevention of severe illness, which is still 100%; final results could be adjusted by a few percentage points

British-Swedish drugmaker's discrepancies in data, failure to communicate with American authorities, dosing mistakes are blamed for distrust

US federal health officials concerned company may have provided an incomplete view of efficacy data; FDA to rule on authorization in coming weeks

Drugmaker says long-awaited vaccine data shows 79% efficacy overall and that it works for all ages, including older people, as it seeks US FDA approval for emergency use

UK's Johnson, other leaders receive shot to assure their citizens its safe to be immunized: 'Please go and get it'

Researchers from University of Oxford say non-peer-reviewed data suggests natural and vaccine-induced antibodies can neutralize variants, but at lower levels

More countries halt use of shot due to fears of blood clotting, but experts say 'no indication' it's linked to medical problems