The Health Ministry reported 657 new cases and seven deaths, taking the total number of cases since the pandemic began to 45,688 and the death toll to 1,716.
Of the new cases, 227 were in the Silesia region, where there has been an outbreak among coal miners.
It also cut capital expenditure across the group, and expects to reduce the total for the full year by 1.5 billion euros ($1.8 billion) to 8-8.5 billion euros.
The companies did not disclose the financial details of the agreement, but said terms were based on the volume of doses and the timing of the delivery.
President Klaus Iohannis ordered a strict lockdown in March to help rein in the spread and then replaced the state of emergency with a softer state of alert mode.
The weekly infection survey said an estimated 1 in 1,500 individuals had COVID-19 in the most recent week from July 20-26, compared to 1 in 2,000 the previous week.