It is also in the interests of all nations, but arguably especially wealthy nations, to participate in the global sharing of surveillance data about and biosamples of suspect pathogens through mechanisms maintained by the WHO. As we noted in Section 1.1.1, nearly 200 countries are signatories to International Health Regulations, which, among other things, obligate them to do so. However, it is here that serious clashes between self-interest and global justice can emerge. Shared bio-samples are u