The Czech Republic has its third health minister in just six weeks as the country grapples with a worsening coronavirus outbreak.
Prymula denied any wrongdoing, saying he went through the restaurant to a private space for a meeting, but offered his resignation to Czech Prime Minister Andrej Babiš.
The new health minister was formerly the deputy director of the University Hospital in Brno the second largest Czech city but has no political experience.
Blatný’s appointment was announced on Twitter by Jiri Ovcacek, spokesman for Czech President Milos Zeman.
The Czech Republic is one of the worst affected EU countries for the number of new deaths and infections per 100,000 inhabitants.
A total of 297,013 confirmed cases have been registered in the country, including more than half that figure in the last two weeks.
Prymula was appointed in September to lead the country’s response to the health crisis, just as the number of infections began to soar.
In a press release, the Czech Prime Minister thanked his former health chief and said Blatný’s main task is to “stabilise the current epidemiological situation and ensure the capacity of hospitals”.