Control of the epidemic requires action at the individual, community, and population levels. CDC has provided
state, tribal, local, and territorial health departments with extensive detailed guidance on contact tracing,
infection control, and a wide range of other prevention and control topics. Recent models suggest that asymptomatic and pre-symptomatic transmission and delays in case recognition can greatly reduce the effectiveness
of contact tracing. To enhance the speed and thus effectiveness of contact tracing, CDC is exploring technologic
methods for instantaneous voluntary notification of contacts of confirmed cases.
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