FYI an example from Germany:
Currently 3 local districts atm have 7-day incidences of > 50 / 100,000,
which is a threshhold which automatically requires the local authority - NOT central govt - to implement appropriate measures:
(there are 401 districts and Germany as a whole is at 13.1 / 100,000; 4-day R= 1.06; 7-day R = 1.04)
https://www.rki.de/DE/Content/InfAZ/N/NeuartigesCoronavirus/Situationsberichte/Septt_2020/2020-09-21-de.pdf?__blob=publicationFile
".... the district Cloppenburg and the cities of Würzburg and Munich where the 7-day incidence is > 50 cases/100,000 population.
The increased incidence in the district of Cloppenburg can be attributed to several COVID-19 clusters after outbreaks in sport clubs, families, nurseries, und religious communities.
Responsible authorities implemented extensive regional measures, e.g. (partly) closings of schools and sport clubs, restaurants and event locations.
Furthermore, serial testing of affected facilities was performed.
The increased incidence in the city of Würzburg can be attributed to COVID-19 cluster after an outbreak in a shisha bar and further cases in private (bar visit) or work environments.
A general ruling was published for the city which provides for restrictions on private events (max. 50 persons indoors, max. 100 persons outdoors)
and prohibits the serving of alcohol from 11 p.m. to 6.00 a.m.
Linked to this cluster, the 7-day incidence in the surrounding district of rural Würzburg is also increasing.
In the city of Munich several outbreaks (mobile care service, hospital, accommodation for asylum seekers, day care centres, schools, restaurants/bars and returning travellers) have contributed to the increased 7- day incidence.
Current measures comprise a ban on the selling and consuming of alcohol,
prolonged obligation to wear a mouth and nose mask in schools,
football games without spectators and intensified control measures during public celebrations.
Further measures are currently being discussed.
The increased incidence in the affected districts is mainly due to transmission during family and other private events. The proportion of travel returnees among the cases is decreasing.
An increase in COVID-19-related outbreaks is reported in nursing homes"