T200 and TME3 infected leave tissue was evaluated for the development of symptoms over a 67 day period. Leaves for both T200 (A) and TME3 (D) at 12 dpi (early infection) appear symptomless. Leaves at 32 dpi for T200 (B) and TME3 (E) display characteristic mosaic, distortion of leaf margins and leaf curling. Leaves at T200 (C) and TME3 (F) are severely reduced in size. Newer emerged leaves on some cassava TME3 (G) plants (on average, 2 out of every 6), displayed an attenuation in symptoms and almost appear symptomless. Viral titre from SACMV-–infected T200 and TME3 leaf tissue was measure using qPCR and is reported as the mean Log concentration of DNA-A molecules/ng TNA for 12, 32 and 67 dpi in infected leaf tissue samples (H).