FILE - In this April 21, 2021, a coronavirus piñata sits in storage at Victor Ochoa's workshop in Mexico City. Ochoa says that sales of piñatas at his workshop have decreased by 90% because of the restrictions used to control the spread of COVID-19. Mexico City's government announced on Friday, May 7, 2021 that public hospitals dedicated to fighting COVID-19 are experiencing their lowest rate occupancy of the pandemic and the city is slightly easing some restrictions, more than three months after infections peaked in the Mexican capital in January. (AP Photo/Marco Ugarte, File)

FILE - In this April 12, 2021 file photo, people over age 60 line up to be vaccinated with the AstraZeneca COVID-19 vaccine at the University Olympic Stadium in Mexico City. Mexico City's government announced on Friday, May 7, 2021 that public hospitals dedicated to fighting COVID-19 are experiencing their lowest rate occupancy of the pandemic and the city is slightly easing some restrictions, more than three months after infections peaked in the Mexican capital in January. (AP Photo/Marco Ugarte, File)

FILE - In this March 11, 2021 file photo, directed by a nurse, a COVID-19 patient, back center, stretches her arms as part of a fitness program in a field hospital built inside the Citibanamex convention center in Mexico City. Mexico City's government announced on Friday, May 7, 2021 that public hospitals dedicated to fighting COVID-19 is experiencing its lowest rate occupancy of the pandemic and the city is slightly easing some restrictions, more than three months after COVID-19 infections peaked in the Mexican capital. (AP Photo/Fernando Llano, File)

FILE - In this Jan. 10, 2021 file photo, a patient is moved from an ambulance into the COVID-19 treatment center at Dr. Carlos MacGregor Sanchez General Hospital in Mexico City. Mexico City's government announced on Friday, May 7, 2021 that public hospitals dedicated to fighting COVID-19 are experiencing their lowest rate occupancy of the pandemic and the city is slightly easing some restrictions, more than three months after infections peaked in the Mexican capital in January. (AP Photo/Rebecca Blackwell, File)

FILE - In this Jan. 12, 2021 file photo, the shadows of restaurant workers banging metal pots are cast on the street as more than a hundred employees from multiple restaurants block an intersection in the Polanco neighborhood to protest COVID-19 "red alert" restrictions that have closed on-site dining in Mexico City. Mexico City's government announced on Friday, May 7, 2021 that public hospitals dedicated to fighting COVID-19 is experiencing its lowest rate occupancy of the pandemic and the city is slightly easing some restrictions, more than three months after COVID-19 infections peaked in the Mexican capital. (AP Photo/Rebecca Blackwell, File)

FILE - In this Feb. 15, 2021 file photo, people over age 60 wait in an hours-long line to get the AstraZeneca vaccine, on the day Mexico begins vaccinating its elderly population against COVID-19, outside a health center in the outlying Milpa Alta borough of Mexico City. Mexico City's government announced on Friday, May 7, 2021 that public hospitals dedicated to fighting COVID-19 are experiencing their lowest rate occupancy of the pandemic and the city is slightly easing some restrictions, more than three months after infections peaked in the Mexican capital in January. (AP Photo/Rebecca Blackwell, File)