It also includes some almost-up-to-date cholera numbers, and says there could be 118,000 potential new cholera cases in 2013. OCHA was making similar dire predictions early in 2012, forecasting 200,000 "moderate" cases and 40,000 "severe." MSPP reported 113,145, and while it doubtless missed some, even I can't imagine it missed half of them.
And when you take the case numbers for the first two months of 2013 (which have been twice as high as January-February 2012), and project them over the whole year, you get 73,866. That's still appalling; every single cholera case in Haiti since October 2010 has been one too many. But it's not 118,000.
I have no idea how OCHA arrives at its cholera forecast numbers. It does look, however, like an attempt to shock a tired donor community into coughing up yet more money to clean up the UN's own mess.