Paraguayan President Mario Abdo Benítez has said the spread of coronavirus in Brazil threatens his country’s success in containing the virus.
Mr Benítez said more than half of Paraguay’s 563 cases were people who had entered from neighbouring Brazil.
The country has spent the last two months under a strict lockdown, and most people with the disease are being quarantined in guarded shelters.
Meanwhile, Brazil has become the worst-hit country in South America.
More than 10,000 new cases were reported there on Friday, bringing the national total to 145,328. Nearly 9,900 virus-related deaths have also been reported.