RKI (German oublic health)
They say they don't expect to see the trend increasing again
- which agrees with Denmark public health sessment for all European countrieis coming out of lockdown atm
ntbo they are monitoring closely, because they aren't sure about how to use R0 either, with such low numbers.
The mass testing and mass contact tracing enables local hotspots to be locked down promptly,
BUT
with people being infectious before syptoms, there is still a risk
https://www.rki.de/DE/Content/InfAZ/N/NeuartigesCoronavirus/Situationsberichte/2020-05-12-de.pdf??__blob=publicationFile
Outbreaks
After COVID-19 outbreaks in six retirement homes in the district of Greiz, Thuringia, the reported incidence in this district in the past 7-days has been decresasing to 54 cases per 100,000 inhabitants.
In the district of Sonneberg, an increase of the reported incidence in the past 7-days to 53 cases per 100,000 inhabitants has been observed.
Since the end of April, COVID-19 outbreaks were also reported in meat processing plants in Baden-Wuerttemberg, North Rhine-Westphalia and Schleswig-Holstein,
with case numbers ranging from 100 to 350 (each)
Estimation of the reproduction number (R)
....
The reproduction number, R, is defined as the mean number of people infected by a case.
R can only be estimated based on statistical analyses such as nowcasting and not directly extracted from the notification system.
.....
The number of incident cases estimated using the nowcasting approach is presented as a moving 4-day average to compensate for random effects of individual days....
With this approach, the point estimate of R for a given day is estimated as the quotient of the number of incident cases on this day divided by the number of incident cases four days earlier.
The current estimate is R= 0.94 (95% prediction interval: 0.79 - 1.10)
and is based on electronically notified cases as of 12/05/2020, 12:00 AM.
The estimate of the reproduction number R has been slightly above 1 in the last few days,
which shows that the decline in the number of new cases we have observed in recent weeks has levelled off and may be reaching a plateau.
So far we do not expect to see an increasing trend again.
The slowdown in the decline in new cases is also related to local outbreaks, for example in the vicinity of slaughterhouses.
Moreover, since case numbers in Germany are slowly decreasing overall,
these outbreaks have a greater impact on the value of the reproduction number R than if total case numbers were higher.
Overall, therefore, the development of the number of new cases must be observed in the next few days in order to rule out a merely temporary slowdown in the decline.
Statistical uncertainties are represented by the prediction interval.