The organizers of mass events for which higher attendance limits will be valid as of Aug. 1 should watch that they will sell tickets only to the fully vaccinated people or those who had Covid in past 180 days if the attendance is over 3,000, Health Minister Adam Vojtěch told reporters after a meeting with Health and Social Care Workers' Trade Union leader Dagmar Zitnikova. Under the measure the government approved on Monday, up to 7,000 people outside and 3,000 inside will be allowed to attend sports and cultural events as of Aug.1, instead of the current 5,000 and 2,000, respectively, if they are seated. Indoors, the limit of 3,000 seated spectators can be exceeded up to the full capacity if all above the limit are fully vaccinated or underwent Covid-19 in the past 180 days. The same rule is valid for outdoor events. The first 3,000 visitors who buy tickets can also present a negative test for coronavirus. Vojtěch said this can be regulated only for the events to which tickets are sold.