“…The rate of CT was found to vary from between 16-40% in the USA and UK, ~60% in Spain, 50-80% in Brazil, 75-90% in France (Pereira-Chioccola et al, 2009), and <20% in Asian countries including India (Sharma et al, 2004), Malaysia (Nissapatorn et al, 2003, or Thailand (Anekthananon et al, 2004;Subsai et al, 2004). CT is frequently diagnosed in adults but rarely occurs in children with AIDS; the infection accounted for 0.86% of AIDS-defining illnesses (Richards et al, 1995) or <1.0 per 100 person years (Dankner et al, 2001;Gupta et al, 2009). CT is the most common cause of focal intracerebral lesion(s) in patie n t s w i t h A I D S .…”