This document discusses international health organizations and the International Health Regulations (IHR). It provides background on the IHR, stating that they are binding on 194 countries and are intended to help prevent disease spread across borders and ensure countries have response systems. The IHR require countries to quickly notify the WHO of severe disease events that could spread internationally. The WHO then guides a coordinated global response. Four diseases always require reporting. The role of countries is to assess risk while the WHO determines if an event is an emergency of international concern.