Table 2. Summary of control measures for mitigation of COVID-19 infections adopted in Germany as of April 4, 2020.

The indicated percentages are meant to be compared to the state without the respective measure (i.e., the whole has a multiplicative effect).

Label	Policy	Description/Working assumptions
CS	Closure of all schools, universities, sport clubs. Public events are canceled. Stricter social distancing encouraged	Overall reduction of activities, decreasing all entries by 10% (social distancing). Moreover, a strong effect on the shape matrix reducing child-child contacts by 80% (resulting from no contacts in the school realm), adult-adult contacts by 20% (students in high school and college, club activities, public events), and senior-senior by 10%. Adopted nationally from March 14 (day 28), fully in force March 16 (day 30).
HO	Remote working policy (home office), closure of all restaurants and bars, reduced (use of) public transport services.	Reducing contacts: child-child (- 20%), child-adult (- 20%), adult-adult (- 50%), child-senior (- 30%), adult-senior (- 30%), senior-senior (- 30%). Assumed to be applied at national scale from March 13 (day 27), contact reductions fully achieved after 13 days.
M	Awareness raising due to media, canceling big events	Information and media activities increase social distancing and personal hygiene (e.g., washing hands), starting on February 25 (day 10). Contacts are on average reduced by 20%, achieved by activity reduction (higher relative decrease for seniors than for juniors and adults).
T0	Testing	Increased testing activity starting February 28 (day 13), most significant increase between March 9 and March 15 (days 23 through 29) Approx. 10-fold increase in detection rates compared to previous levels.
IC0	Isolation of infected cases	Identified and suspected infected cases (self) quarantined for 2 weeks. Reduces effective contact rates (for individuals in specific groups by up to 40%); implemented starting on February 28 (day 13), in effect by March 7 (day 21).
LD	Partial economic and social activities	Closing non-critical businesses, gatherings of more than two or three persons sanctioned, decreases contact rates by another average 30%, starting March 22 (day 36), in full effect by March 27 (day 41).