On Dec 24th, Czechia had 4363 positive tests, hugely down from 14054 a day earlier and 7613 a week earlier. Of course, the drop is due to Baby Jesus: small number of tests. The percentage of positive tests went to the record-breaking 43%. https://onemocneni-aktualne.mzcr.cz/covid-19
43% indicates that the virus gets to almost everybody where it has a chance. I also think that this high 43% means that at most ~60% have antibodies by now. When we get immunity Y closer to 100%, the percentage of positive tests must also get down, (well?) below 100%-Y.
The Havlíčkův district has been the top infected one for a month or so and abruptly dropped. 700 cases per 100k and 7 days is the score of leading Opava, Ostrava, Rychnov nad Kněžnou, and Kroměříž districts, random mostly rural places.
The severity of infected people clearly dropped further. Despite the record-breaking percentage of positive tests, hospitalizations/serious dropped in 24h from 4936/651 to 4455/634, almost 50% below Nov 4th peaks, Covid deaths per day stagnate a bit below 100 when revised.
The graphs show pretty much stagnation of hospital utilization in December. The colorful curves' being so safely above the y=0 base line means that the Czech hospital system has always been extremely far from reaching the capacity.