The Czech authorities say the results of a mass antibody study carried out on 23 April has revealed a tiny proportion of the population has so far been exposed to Covid-19.
Of 26,549 people tested in eight locations across the country, just 107 tested positive for antibodies in the serological test.
The authorities have not given a single nationwide result in percentage terms, rather a range for each testing location (Prague, Brno, Olomouc and several smaller towns). Nowhere does the number exceed 5%. In Prague, the figure was 1.48%.
As of Wednesday morning, the number of confirmed infections is 7,899. Some 295 people are in hospital. Some 4,017 have recovered, and 258 have died.
The Czech numbers are amongst the lowest in Europe, and the government says this is due to one of the first lockdowns introduced in the EU. The country is now slowly lifting restrictions, and is still reporting an R number of 0.7%.