A recent study conducted at the University of New South Wales in Sydney, Australia shows promising results for the flu vaccine in preventing cardiac arrest. Evidence shows a correlation between patients that contract the flu and those that have cardiovascular complications. A case-control study showed that receiving the flu vaccine was associated with a reduced likelihood of having an acute myocardial infarction (MI). Those patients who were vaccinated were 45% less likely to have an acute MI. The patients in this particular study were 40 years or older. Further studies are needed to confirm this correlation and the reasons behind the positive results, but there is concrete evidence pointing to the fact that the since the flu vaccine prevents flu infection, patients can therefore avoid such an infection that often leads to cardic problems in older patients.