Mexican President Lopez Obrador said Sunday that he has COVID-19. He said in a tweet that his symptoms were light so far, that he's already getting treatment and that, 'as always, I am optimistic.' The President says he's enjoyed good health though he suffered a serious heart attack in 2013. Lopez Obrador has resisted the lockdowns seen elsewhere and has resisted wearing a mask. His diagnosis comes as Mexico approaches a grim milestone, 150,000 deaths from COVID-19. That's the world's fourth highest death toll, according to a Reuters tally. An intense second wave has overwhelmed Mexico City's hospitals. The health ministry said real numbers of infections and deaths are likely higher than the official count. Jose Garcia lives in Mexico City and lost a family member from COVID-19. "We were looking for hospitals all day and there was no room in any. This was the only place that would receive us and unfortunately my family member did not survive. Now they are to be cremated because funeral homes are also full." Mexico's government said it hopes to acquire 12 million does of Russia's Sputnik vaccine as early as next week, which will add to its existing supply of vaccines from Pfizer. Lopez Obrador says he will still speak to Russia's Vladimir Putin on Monday, though his interior minister will take his place for the country's daily briefings.