Tanzania's President John Magufuli is in very serious condition in India due to Covid-19 and is ongoing serious treatment.

Magufuli's condition was not leaked out until Tundu Lissu, who lost last year's election to Magufuli, cited medical and security sources in Kenya for his information that the president had been transferred from a hospital in Kenya to India and was in a coma.

Mgufuli was last seen on Feb 27 looking at his normal robust self during a ceremony at State House in Dar es Salaam.

As per the statement given by Lissu, Magyfuli was flown to Kenya's Nairobi Hospital at the start of this week and then on to an unknown destination in India.

"He’s comatose since yesterday morning," he added. Though Kenya's Nation newspaper had cited without mentioning the name that an African leader was ongoing Covid treatment on a ventilator at Nairobi Hospital.

According to Tanzania's constitution, Vice President Samia Suluhu Hassan would take over for the rest of the five-year term if the president is unable to discharge duties.

"Whatever is the case with President Magufuli, we can only wish him well if these stories are indeed true, and we very much reiterate our preparedness to support the government and the people of Tanzania," WHO Director Matshidiso Moeti said.

TV footage showed Magufuli on Jan 8 thanking China's senior diplomat Wang Yi for turning up without a mask to meet him during a tour of Africa.

Other Chinese officials present did wear masks.

"His COVID denialism in tatters, his prayer-over-science folly has turned into a deadly boomerang," Lissu tweeted in the early hours of Thursday.