Sono ben pochi i nuovi farmaci e vaccini sviluppati per le cosiddette "malattie più trascurate", spesso di origine parassitaria, quali leishmaniosi, malattia del sonno, oncorcercosi, dengue, tracoma e malattie diarroiche infettive.
Only a very few new drugs and vaccines have been developed to deal with the “most neglected diseases” - often parasitic diseases such as Leishmaniasis, Sleeping Sickness or Onchocerciasis, and Dengue, Trachoma and infectious diarrhoeal diseases.