Luxembourg now gonna start reall mass testing. From Monday through end of Juli the country wants to test 20000 persons per day, or 3% of it's population each and every day. That way the country wants to ensure that there are no unknown asymptomatic patients spreading the disease and to know exactly who got the disease who didn't.

In any case the disease in slowly going away. On Thursday, out of 750 tests only one had been positive.

Luxembourg also has expanded on the statistics they release, now including R₀ rates and how they are evolving.

https://msan.gouvernement.lu/en/graphiques-evolution.html#sg

Also comes with a handy description how R₀ exactly works:

https://msan.gouvernement.lu/dam-assets/covid-19/graph/Description-reproduction-numbers.pdf

Oh, and a nice little video about how Covid-19 compares to yearly flu and drowning deaths (after someone claimed that more people would die in Swimming pools each year than on Covid-19) to Covid-19 deaths. And that's with the dark number of flu cases each year included as he's explaining at the end:

https://www.youtube.com/watch?v=1rEO8iJB45A

Even though the flu gets an early lead due to starting the comparison at the starting date of the flu season according to the CDC on October 1st, once Covid gets going flu can't keep up, and it's not even close.

JUST IN: 84 people died in New York state from the coronavirus on Friday — the least number of deaths since late March.https://t.co/O2W3R59wtF

— Axios (@axios) May 23, 2020

Why do people still compare Corvid to the Flu...if Countries had done nothing the amount dead from Corvid would be exceptional higher.. the Hospitals would have been overun within days.

That's great, mass testing and "catching" those asymptomatic people is a great step up since those are the ones that spread the virus like crazy. Here we started doing it a few weeks ago and for some reason some people were pissed about the health ministry comunicating numbers of asymptomatic patients. 

That's all those Ant-vaxxers, conspiracy theorists and those who demonize anything they deem "socialist" and the like who think that Covid-19 ain't real and just a ploy to extend government control or something along those lines. They keep bringing up the flu and portray it as something much more vile as it really is to belittle Covid-19

I don't think it will matter much in the long run, sooner or later your country will open up your borders and than foreigners from other european countries will visit and spread the virus. You can only stop the virus for so long.

Edit: where you getting 1 confirmed case from, reading worldometer you guys had 9 confirmed cases today?

Interesting, and good job by Luxembourg! Hopefully with that early warning system in place you can prevent a second wave, keep the water calm.

I've probably been calculating Rt eff wrong.
I've been comparing week over week changes, then take the 7Root() from the change in reported cases (average of 3 days, compared to avg of 3 days exactly one week ago) to get the avg daily change factor without the weekly cycle in reporting interfering. Then I take that number to the power 5.1 (the median incubation period) to reflect how many people each infected person infects.
I guess it's the same thing in a roundabout way.

For example when I apply that to Luxembourg
23 cases reported from May 20 to 22
29 cases reported from May 13 to 15
Factor 0.7931 for 7 day comparison, 0.967x per day (7Root), Rt eff 0.845 (0.967 to the power 5.1) for May 21st

The graph shows 0.85 for the 20th, I guess it comes out the same :)

Looking at changes in reported cases really needs more cases to stay accurate. Below 100, fluctuations in reporting start to amplify a lot.
I've also been redistributing outliers here and there when a country I'm tracking suddenly throws up a whole bunch of old cases. For example France is really bad with outliers, -141 cases one day, spike of 3640 cases earlier. Plus a couple days ago France resurrected 217 people. The UK also had -525 cases a few days ago. Ireland also put up a nice outlying spike not long ago. I mostly keep the messy data as is in the primary graphs (except the negative deaths), but need some adjusting for the growth comparisons since it will skew the stats twice for several days. Kalman filtering by hand...

Don't really see a point when the border to Germany is already open but okay why not.

The numbers had not been updated yet when I wrote that, so I had to use the number from Thursday. But it's true that on Friday, there were 9 new cases out of 800 tests.

As for our borders, they are open and have never been closed. Roughly one quarter of the workforce of Luxembourg actually lives outside of Luxembourg (the short distance doesn't necessitate to move in, and housing prices in Luxembourg are much higher than in the neighboring regions, hence why many Luxembourgers, especially retirees, move to the neighboring regions - rent is just about a third compared to the one in Luxembourg for the same size), especially one third of the healthcare workforce, so closing our borders was never an option in the first place. But our neighboring countries closed their borders, which made passing them much more difficult without a note that you work in Luxembourg and need to cross the border for that, and why Luxembourg requisitioned the hotels (which had closed down beforehand anyway) to temporary lodge those who didn't want to go through that hassle every day. But only about hundred took that opportunity, as they would then miss out on their families instead.

In other words, the opening of the borders won't bring that much change to the population. The reopening of the airport on the other hand could do this... if the destinations weren't handpicked, tests before and after and face masks obligatory, and a short quarantine periods after return. While I don't think that we're gonna get comletely rid of it soon, I'd say the precautions too high and the infection rate is too low now to become any real threat again unless the virus mutates.