Mexican President Andres Manuel Lopez Obrador tweeted on Sunday that he has tested positive for COVID-19. This file photo shows him giving his daily morning news conference at the presidential palace, Palacio Nacional, in Mexico City on December 18, 2020. Photo: IC

Mexican President Andres Manuel Lopez Obrador said Tuesday he was doing well despite catching COVID-19 for a second time, reassuring the country that Omicron was a less dangerous variant.

"I'm feeling pretty good," Lopez Obrador, 68, said in a video message played during a news conference led by Interior Minister Adan Augusto Lopez in his absence.

"Let's not be scared. Fortunately this is a variant that does not have the level of danger of the Delta variant," Lopez Obrador added, speaking with a croaky voice.

"What do I have? Burning in the throat, hoarseness, a little body ache at first," he said.

On Monday the president appeared in front of journalists speaking with a hoarse voice and without a face mask, prompting accusations from critics of irresponsible behavior.

He said at the time that he planned to get tested for the coronavirus but believed he had the flu.

Hours later, however, he announced that he had COVID-19.

Lopez Obrador overcame a first bout of the coronavirus in early 2021.

He has received the AstraZeneca vaccine including a booster on December 7.

Like many countries, Mexico is in the grip of a new wave of infections following the emergence of the highly contagious Omicron variant and traditional year-end family gatherings.

On Friday, Mexico's official COVID-19 death toll - the fifth highest in the world - surpassed 300,000, although so far daily fatalities remain far lower than during previous waves.

The country of 129 million people has reported a total of more than 4.1 million confirmed cases of the coronavirus.

The real figure is believed to be much higher due to the low level of testing.