Years Positive Negative Total
2008 27 4562 4589
  0.59% 99.41%  
2009 33 5399 5432
  0.61% 99.40%  
2010 28 6124 6152
  0.46% 99.54%  
2011 45 6058 6103
  O.74% 99.30%  
2012 27 6892 6919
  0.39% 99.60%  
Table 2: Showing results for seropositive and seronegative blood samples from the year 2008 to 2012.