I thank my right hon. Friend for all the work he does on TB. As chair of the all-party parliamentary group on malaria and neglected tropical diseases, I would like to point out that there is a malaria vaccine, which is being deployed for the first time. We are not sure how effective it is. It is clearly quite effective, but a lot more work needs to be done on it. Companies such as GSK, which is behind this vaccine, are prepared to invest in these things even though they have no commercial return from them. Let us hope that a similar approach will be taken by commercial companies and Governments in respect of TB.