In reading the post that marble did on the 14 day quarantine there was anothere link in there to this article that states that almost 25% of Mexicans have already had the virus which would be over 30 million.

https://mexiconewsdaily.com/news/coronavirus/covid-case-numbers-are-actually-higher-than-30-million/

-- Meanwhile, Mexico’s pandemic continues to rage. The Health Ministry reported 11,799 new cases on Thursday, increasing the accumulated tally to 1,289,298. An additional 718 fatalities lifted the official Covid-19 death toll to 116,487.

Both the case tally and death toll are widely believed to be significant undercounts due to Mexico’s low testing rate. Results of a serological survey presented this week suggested that more than 30 million Mexicans have been infected. --