Figure 3 is a further area breakdown showing percentage numbers of sites contaminated within vehicles of region B. Notably, before cleaning, about 67% of sites sampled in area 1
of region B were positive for bacteria. After cleaning, however, no bacteria were found on any of the sampled sites of the vehicle in this region. Alarmingly, however, data obtained
from area 3 of this region showed that the number of sites contaminated in the vehicle had increased from 57.1% before cleaning to 86% after cleaning (fig 3).