"We will act very strongly against any attempts at corruption and profiteering of this crisis. Special units of the NPA will be put together to move immediately and act against those we find evidence of corruption."
Ramaphosa said the SA Reserve Bank and all commercial banks will make it a point that notes and coins were available during the lockdown.
The Johannesburg Stock Exchange would also continue to function, he said.
Unity of purpose was what would help the country to defeat the scourge of Covid-19.
"I call on all of us to play our part and our role, to be courageous, be patient and show solidarity and compassion on one another," he said. "We are a nation of one and we are surely going to prevail. May God protect our people."