MEXICO CITY, Dec 12 (Reuters) - A northern Mexican state reintroduced the obligatory use of face masks in closed public spaces, officials said on Monday, in a bid to reduce rising COVID-19 infections, as well as the spread of other respiratory diseases.
The health minister of Nuevo Leon state, home to Mexico's third-biggest city Monterrey, highlighted the updated guidelines in a news conference and said that the measure will go into effect immediately.
Official figures show Nuevo Leon is one of the areas with the highest concentrations of COVID-19 in Mexico, with . . .
