LONDON, April 7 (Reuters) - People in Britain who have received their first dose of the AstraZeneca COVID-19 vaccine should continue to be offered their second dose, despite a change in guidance over administering the shot to younger citizens, health officials said.
   "Those who have received their first dose of AstraZeneca vaccine should continue to be offered the second dose of AstraZeneca vaccine, according to the set schedule," said Wei Shen Lim, chair of the Joint Committee on Vaccination and Immunisation.
  

(Reporting by Guy Faulconbridge and Kate Holton, writing by
William James; Editing by Alistair Smout)
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