Brazil has become one of the world's epicenters of the coronavirus pandemic, with the South American country reporting more than 1,000 deaths daily.
Infections are concentrated in favelas, or heavily congested slums where hygiene is poor.
Confirmed cases as of Friday had topped 330,000, with more than 20,000 fatalities.
At a municipal cemetery on the outskirts of Sao Paulo, workers struggled to keep up with the fatalities. They opened 8,000 new graves last month.
But nearly 80 percent of the burial sites have already been occupied, as about 200 coffins are arriving every day.
Officials say the cemetery will be filled to capacity in early June if burials continue at the current pace. They say the number of coffins is increasing.
At least 13 million Brazilians are said to live in favelas. The country's battle against the coronavirus may hinge on whether it can halt infections in the slums, as winter approaches in the southern hemisphere.