Mexico City — Mexico’s top coronavirus official said Sunday that definitive data on the country’s death toll from COVID-19 won’t be available for “a couple of years.”

The statement by Assistant Health Secretary Hugo López-Gatell is likely to revive debate about Mexico’s death toll, currently at 76,430, the fourth-highest in the world.

“When will the final statistics on deaths from COVID-19 be ready? Certainly, a couple of years after the first year of the pandemic,” López-Gatell said, adding that work would be left to the country’s statistics institute.

Officials have acknowledged in the past that the figure is a significant undercount, because it includes only those who died after a positive test result, almost always at a hospital. Mexico does very little testing, and many people die without a test.

But the Mexican government has avoided adjusting its death toll upward to account for people who died at home or weren’t tested.

Some parts of the country like Mexico City have begun conducting their own recalculations, finding “excess deaths” likely caused by coronavirus were at least double official figures.