This dataset contains pooled samples of human blood serum from males and females were collected in
metropolitan South East Queensland, Australia in 2002/03, 2006/07, 2008/09, 2010/11 
and 2012/13. All samples were obtained from de-identified surplus pathology samples.

Each serum pool comprised 100 individual de-identified surplus serum samples, except those pools created for the 2006/07 sampling that contained up to 30 samples per pool.