Message : Required fields (Reuters) - The FTSE 100 ended lower on Friday and recorded its worst weekly performance since October, as stalled vaccine rollouts and lockdowns to curb the spread of contagious new coronavirus variants kept investors from jumping into riskier assets. The blue-chip FTSE 100 index dropped 1.8%, with energy and mining sector being top drags for the week, while the mid-cap index fell 0.7%. Drugmaker AstraZeneca fell 3.7% for the week and was the third biggest drag to the FTSE 100 on Friday as a tussle with the European Union on vaccine rollouts weighed on the stock. However, Europe's medicines regulator recommended approving the drugmaker's COVID-19 vaccine for people over the age of 18, the third vaccine to be cleared for use in the European Union.