US CDC (Centers for Disease Control)

Initiated Contact tracing for residents in five states: Georgia, California, Arizona, Texas, and Virginia. Official statements attributed coordination to direct diplomatic engagement with international health authorities, conspicuously omitting the World Health Organization.

Engine Impact: confirms the H2 hypothesis on bilateral channel substitution. The US health apparatus is successfully substituting multilateral information flow with rapid bilateral intelligence sharing, insulating its domestic public health response from its the World Health Organization withdrawal. keeping operations running intact; institutional architecture shifted.