Its current priorities include communicable diseases, in particular HIV/AIDS,Ebola,malaria and tuberculosis; the mitigation of the effects of non-communicable diseases; sexual and reproductive health, development, andaging; nutrition, food security and healthy eating; occupational health; substance abuse; and driving the development of reporting, publications, and networking. The WHO is responsible for theWorld Health Report, a leading international publication on health, the worldwide World Health Survey, and World Health Day(7 April of every year). The head of WHO is Margaret Chan.