Red Cross paramedics push a man with symptoms related to COVID-19 in a stretcher toward an ambulance in Tijuana. (Marcus Yam / Los Angeles Times)Nearly a year into the COVID-19 pandemic, Mexico is entering its darkest phase yet. Mexican officials described the delay as a minor setback and said shipments from Pfizer are expected to resume Feb. 15. A healthcare worker receives a dose of the Pfizer COVID-19 vaccine Dec. 30 in Mexico City. Private doctors, who were not a part of the initial vaccination plan, have spoken of going to the U.S. to get vaccinated.