Cases are spiking in Myanmar, with the State Administration Council — as the military junta calls itself — reporting more than 3,400 new cases Sunday, up from fewer than 50 per day in early May.

Suu Kyi was deposed by the military in February, sparking a mass uprising and a brutal crackdown. More than 890 civilians have been killed by the junta's forces, according to a local monitoring group.

On Monday, a prosecution witness set to testify that she flouted coronavirus restrictions during elections her party won in a landslide last year "was absent on account of COVID-19 infection", her lawyer Khin Maung Zaw told reporters, as quoted by AFP.

A second witness gave testimony on the same charges, and the court also heard evidence on separate charges that Suu Kyi illegally imported and possessed walkie talkies, he said.

The Nobel laureate, 76, and all members of her staff have been fully vaccinated while in military custody, her lawyer Min Min Soe told reporters last week.

She did not give details on when Suu Kyi — who is believed to have received a first dose before her government was deposed — had received the jab, or what vaccine she was given.

The ousted leader "voiced her grave concern for the people during the third wave of COVID-19" during Monday's pretrial meeting, Khin Maung Zaw said.

Suu Kyi and former president Win Myint — who also faces charges of flouting COVID-19 restrictions — both appeared in good health, he added.

Cut off from the outside world except for brief meetings with her legal team and her court appearances, Suu Kyi faces a raft of charges that could see her jailed for more than a decade. 

Meanwhile, Myanmar's military ruler said on Friday that Russia had agreed to supply two million doses of coronavirus vaccine from this month, as the Southeast Asian country reported another record in COVID-19 cases and deaths, Reuters reported.

Sr. Gen. Min Aung Hlaing, who led the Feb. 1 coup against Aung San Suu Kyi's elected government, said the virus was spreading fast in Myanmar and that senior Russian defense officials had told him help with vaccines was on the way.

"I told them that I want two million and they will give," he said in remarks carried by Army-owned Myawaddy television.

Min Aung Hlaing last month said he was seeking seven million doses of Russian vaccines.

Myanmar is in the midst of its most serious wave of infections to date, with efforts to manage the outbreak hampered by nationwide chaos in the wake of the military's coup.

Some health experts say Myanmar's real rate of infection is likely to be far higher given a collapse in testing since the coup and health workers joining strikes in protest.

Russia is among the few countries that have openly embraced the military government, which has been condemned globally over the coup and the deadly crackdown on prodemocracy groups. The junta says most of those killed or arrested where “terrorists” who were inciting violence.

Min Aung Hlaing said Myanmar was keen to make its own COVID-19 vaccines and Russia wanted to cooperate and send a delegation to inspect its production plant during this month. He did not elaborate.