Age Not Factor in Immunity to Viruses, McMaster University Study  
12/14/2012 7:12:25 AM

Our immune system does not shut down with age, says a new study led by McMaster University researchers. A study published in PLOS Pathogens today shows a specialized class of immune cells, known as T cells, can respond to virus infections in an older person with the same vigour as T cells from a young person.