The president, who tweeted from his official Twitter account, said his symptoms were mild and he was receiving medical treatment.
“I am sorry to inform you that I have contracted Covid-19. The symptoms are mild, but I am already receiving medical treatment. As always, I am optimistic. We will move forward,” Lopez Obrador wrote.
The president added that he would continue his duties at the presidential palace, which include a scheduled phone call with Russian President Vladimir Putin on the subject of Russia’s Sputnik V vaccine on Monday.
“I will conduct all public affairs from the National Palace. For example, tomorrow I will call President Vladimir Putin, because regardless of the friendly relations, they are likely to send us the Sputnik V vaccine,”
; Lopez Obrador said on Twitter.
He added that Interior Minister Dr Olga Sanchez Cordero would represent him at daily morning briefings.
Mexico is one of 17 countries in the world to report more than 1 million cases of Covid-19. Newly confirmed deaths and cases have been rising steadily across the country since early October, with the last daily figures being among the highest since the pandemic began.
According to Johns Hopkins University, Mexico has registered at least 1,752,347 cases of Covid-19 and 149,084 people have died from the virus in the country.
In the worst-hit city of Mexico, nearly 30 public hospitals say they have reached 100% capacity, and many others are approaching that limit. Mayor Claudia Scheinbaum urged residents not to go outside unless absolutely necessary.
In December, Mexico City and the state of Mexico were set at the “red level”, the highest measure in the country’s warning system to restrict Covid-19. Stricter measures include the closure of indoor catering establishments, leaving only key sectors such as transport, energy, healthcare and construction open.
Lopez Obrador, who rarely wears a mask, has met with widespread criticism for his work on the pandemic.
Mexico has one of the lowest levels of testing in any major country in the world, and tests are often expensive and difficult to access.