Generally women have a greater immune response to flu vaccinations as compared to men. However, their immunity weakens as they age and their estrogen decline, suggests a study. The study was published in the journal of 'npj Vaccines'. We need to consider tailoring vaccine formulations and dosages based on the sex of the vaccine recipient as well as their age, said Sabra Klein, the study's senior author. First, the researchers evaluated immune responses to the 2009 H1N1 influenza vaccine among 145 human volunteers -- one group age 18-45 years, the other of 65 and the olders. Analysing key markers of
91 – 22 – 2490 0302.