The programme has been running over the past two weeks.
Experts and opposition parties have pointed out that only 22 percent of the population have taken part — far short of the 60 percent the government initially said it was aiming for.
“It's a successful step to contain the pandemic in Austria,” Health Minister Rudolf Anschober told a press conference, adding that two million people across the country had participated in the voluntary tests out of a population of 8.8 million.
“In the future, we want to reach groups that have not yet responded positively to the tests. We are reviewing a large number of possible courses of action.Austrian Health Minister Rudolf Anschober. Photo: JOE KLAMAR / AFP
“Without testing, these positive cases would have unknowingly infected other people.”
Anschober said 4,200 cases had been discovered.
In Vienna, just 13.5 percent of residents got tested.
Christian Deutsch of the main opposition Social Democrats (SPOe) said the campaign was “amateurish”, pointing to IT issues that meant some test results had to be recorded with pen and paper, as well as a data breach from the online registration platform.
The “low participation in the mass tests further evidence of the miserable corona management of the turquoise-green government” said Deutsch.
“Obviously, the population has lost confidence in the government's crisis management due to the turquoise-green management by chaos, poor preparation and poor and contradicting communication.”
The liberal Neos party said the real goal should be to enforce measures such as social distancing and mask-wearing.
A new round of mass testing is set to start around January 8, with media reports that the government is considering offering incentives to citizens to get tested to boost participation.
Like several other countries in the region, Austria escaped the worst of the first wave of the pandemic but has struggled to contain the second wave and had to introduce a second coronavirus lockdown which ended last Monday.
The country has recorded 322,588 infections, of which 4,530 have been fatal.