LONDON, Feb 15 (Reuters) - There is not yet enough data
about how vaccines are affecting the spread of COVID-19, British
Prime Minister Boris Johnson said on Monday as he faces pressure
from some of his own lawmakers who are keen to ease lockdown
measures.
"Although the vaccination programme is going well, we still
don't have enough data about the exact effectiveness of the
vaccines in reducing the spread of infection," he told a news
conference.
(Reporting by Guy Faulconbridge; writing by Costas Pitas;
editing by William James)