South Sudan's First Vice President Riek Machar and his wife Angelina Teny have tested positive for Covid-19.

Dr Machar on Monday said that he and his wife, who is also the Defence minister, had contracted the virus after interacting with infected members of the High-Level Taskforce on Covid-19, a team drafted to help fight the pandemic.

"We are still awaiting other tests and hopefully tomorrow we will have the full list (of positive cases among the Taskforce)," Dr Machar told a televised news conference in Juba on Monday.

All our colleagues will also be self-quarantining," Dr Machar said.

South Sudan was the last East African Community member state to report a Covid-19 case when a UN staffer reporting to duty from abroad tested positive in April.