Ukrainian President Zelensky, who was pivotal in Trump's impeachment, has been hospitalized with COVID-19

• Ukrainian President Volodymyr Zelensky has been hospitalized with COVID-19.
• A spokeswoman for Zelensky told Reuters his illness was "nothing serious" despite his admission to a hospital.
• Ukraine's number of coronavirus cases recorded daily has trended upward.
• Zelensky played a pivotal role in recent US politics — President Donald Trump was impeached over a phone call he made to Zelensky in the summer of 2019.

Ukrainian President Volodymyr Zelensky, a key figure key to the impeachment of US President Donald Trump, has been hospitalized with COVID-19.

A spokeswoman for Zelensky told the Reuters news agency on Thursday that he was in a hospital, though she described his condition as "nothing serious."

Zelensky, who is 42, announced on Monday that he had tested positive for the coronavirus. He wrote on Twitter that he would self-isolate and take vitamins and that "It's gonna be fine!"

—Володимир Зеленський (@ZelenskyyUa) November 9, 2020

The spokeswoman said of his health on Thursday: "There are better conditions for patients [in the hospital]. Nothing serious."

According to Reuters, the country's finance minister, its defense minister, and a top aide to Zelensky were also said to be infected.

Zelensky played a pivotal role in recent US politics, thanks to a phone call from Trump in July 2019 in which Trump pressured him to investigate the activities of Joe Biden and his family in Ukraine.

Critics argued that this showed Trump abusing his power. The call led to Trump's impeachment by the Democratic-controlled House of Representatives in December.

He was acquitted by the Republican-controlled Senate in January.

Biden went on to beat Trump in the presidential election last week.

More than 9,200 people have died of the coronavirus in Ukraine, and more than 515,000 people have been infected.

The country's number of coronavirus cases reported daily has risen over the course of the pandemic and is now at an all-time high.

Other world leaders have also tested positive for the coronavirus, including Trump and UK Prime Minister Boris Johnson. Both were also hospitalized but later recovered.