Please - not more ridiculous papaya stories. We already had the pegaga leaves myth here.
The fever in dengue will usually settle after 5-7 days and the platelet counts will start to rise spontaneously. Anything given towards the tail end of the disease will look like a "miracle cure"
Unless you people begin to understand the basic concept diseases run a natural course (with some variation in severity from individual to individual - hence you cannot make conlusions based on individual anectdotes) you'll continue to make the wrong conclusions.
I have not encountered any dengue patient requiring 15 litres of blood transfusion (the body has about 5 litres) !
See the dengue FAQ