Johannesburg - President Cyril Ramaphosa on Monday night announced that international flights into Johannesburg's Lanseria Airport would be suspended.
The president had earlier on Monday night announced a national shutdown, which will come into effect from Thursday and would be in place for at least 21 days. He said if there was a need to extend it, this would be done.
More than 400 South Africans have tested positive for the Covid-19 virus since the country contracted its first case on March 5.
Ramaphosa said the South African government was taking additional measures on Monday to strengthen prevention measures for the virus.
"South African citizens and residents arriving from high-risk countries will automatically be placed under quarantine for 14 days.
"Non-South Africans arriving on flights from high-risk countries we prohibited a week ago will be turned back.
"International flights to Lanseria Airport will be temporarily suspended.
"International travellers who arrived in South Africa after 9 March 2020 from high-risk countries will be confined to their hotels until they have completed a 14-day period of quarantine," said Ramaphosa.