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Mid-term Intervention Scenarios: (a) lockdown vs. stepwise relaxation of lockdown as communicated by the Austrian government, (b) monitoring and adaptive response to partially reverse relaxation, (c) – (e) stepwise relaxation of lockdown paralleled with contact tracing: (c) low (up to 13% of contacts successfully traced), (d) medium (26% traced), (e) and high level of contract tracing (39% of contacts successfully traced). Abbreviation: COVID-19, coronavirus disease 2019.
