Morning flu jabs provoke a stronger immune response than those given in the afternoon, a study shows.
The trial at 24 doctors' practices found people vaccinated before lunch produced the most defensive antibodies.
The University of Birmingham team suggested immunising people in tune with the body's natural rhythm could be a cheap way to save lives.
Experts said the study may mark the dawn of making use of "the body clock in the clinic".
http://www.bbc.co.uk/news/health-36105275