I congratulate my right hon. Friend on securing the debate and on the speech he is making. On the issue of private company and pharmaceutical involvement in the development of vaccines, there has been a challenge, as we saw with the Ebola outbreak, in that this is not an area of great profit for pharmaceuticals; it is difficult for them to recoup their investment from lower-middle income countries. The pharmaceutical model needs more encouragement of pharmaceuticals to invest in development of vaccines such as Ebola. What would he say to encourage that?