Slovakia reduced their #COVIDー19 infection prevalence by 61% (50-70) within one week through mass testing during lockdown!

Here is our analysis done in collaboration with MoH Slovakia. Not yet peer reviewed. More detail in the thread below.

cmmid.github.io/topics/covid19… The change in test positivity between mass testing campaigns
Slovakia gradually scaled up their contact restrictions during Oct as cases kept rising. Then introduced mass testing, first in 4 pilot counties, then nation wide and then in 45 high prevalence counties with a week between each.
The average reduction in infection prevalence within a week after the first round was 61%!

After two weeks and two rounds in the pilot counties the reduction was 82%!

This was against an increasing incidence at time of testing, but also with contact restrictions in place
In a microsimulation model the observed effect was best explained by a combination of a moderately effective lockdown and the effects of mass testing with strong adherence to quarantine of test-positive and their household contacts
Now also on medRxiv: medrxiv.org/content/10.110…

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