In general, WHO does not support travel restrictions in relation to communicable diseases, and the recent case of influenza A (H1N1) was no exception [19] . According to the International Health Regulations [20] , a binding document signed by all WHO Member States, national health measures for travellers must not be more restrictive of international traffic, or more invasive or intrusive to the individual, than available alternatives that provide an appropriate level of health protection. If such measures are implemented, they should be justified by scientific principles, available scientific evidence or WHO advice. In the case of HIV, there is no evidence that denying HIV-positive foreigners access to a country is effective in protecting public health.