Table 1.

Graphical illustration of the temporal distribution of the six rounds of active surveillance sampling between September 2011 and December 2015.

	January	February	March	April	May	June	July	August	September	October	November	December
2011									Round 1
2012	Round 1 (cont)									Round 2
2013	Round 2 (cont)									Round 3
2014	Round 3 (cont)				Round 4						Round 5
2015							Round 6