Mexico was on the verge of approving the Russian coronavirus vaccine Sputnik V following the publication of early results of an advanced study, Mexican officials said Tuesday.

Assistant Health Secretary Hugo López-Gatell, the government’s pandemic spokesman, said the health ministry signed a contract Monday for 400,000 doses of Sputnik V that will arrive this month. He said regulatory approval was expected within hours.

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Paramedics Carolina Estrada, left, disinfects her partner Elvin Munguia after mobilizing a COVID-19 patient from his home to a hospital in the Iztapalapa district of Mexico City, Tuesday, Feb. 2, 2021. (AP PhotoMarco Ugarte)

Mexico was on the verge of approving the Russian coronavirus vaccine Sputnik V following the publication of early results of an advanced study, Mexican officials said Tuesday.

Paramedics in hazmat suits move a COVID-19 patient inside a biocontainment unit from his home to a hospital in the Iztapalapa district of Mexico City, Tuesday, Feb. 2, 2021. (AP PhotoMarco Ugarte)

“Unfortunately, because of the saturation of the hospitals and the phone lines, we are waiting about three or four hours before they can assign us a hospital, and to get there,” said ambulance crew chief Eduardo Vigueras.

Paramedics in hazmat suits move a COVID-19 patient inside a biocontainment unit from his home to a hospital in the Iztapalapa district of Mexico City, Tuesday, Feb. 2 2021. (AP PhotoMarco Ugarte)

“A lot of people prefer to keep their relative at home, knowing that they are going to die, but with their loved ones there for the last few minutes, hours, days,” paramedic Paulina Cervantes said.

A paramedic wearing hazmat gear prepares to pick up a COVID-18 patient, from the Troya ambulance base in the Iztapalapa district of Mexico City, Tuesday, Feb. 2, 2021. (AP PhotoMarco Ugarte)

Once approved, the Russian vaccine would become the third to receive emergency approval in Mexico. The regulating agency approved the Pfizer vaccine in December and AstraZeneca’s in January. Mexico turned to the Russian vaccine following delays in obtaining others it was counting on.

Paramedics in hazmat suits move a COVID-19 patient inside a biocontainment unit from his home to a hospital in the Iztapalapa district of Mexico City, Tuesday, Feb. 2, 2021. (AP PhotoMarco Ugarte)

Mexico President Andrés Manuel López Obrador spoke with his Russian counterpart Vladimir Putin a week ago.

Paramedics Carolina Estrada, left, is disinfected by her partner Elvin Munguia after mobilizing a COVID-19 patient from his home to a hospital in the Iztapalapa district of Mexico City, Tuesday, Feb. 2, 2021. (AP PhotoMarco Ugarte)

Paramedics Carolina Estrada, left, is disinfected by her partner Elvin Munguia after mobilizing a COVID-19 patient from his home to a hospital in the Iztapalapa district of Mexico City, Tuesday, Feb. 2, 2021. (AP PhotoMarco Ugarte)

It couldn't come a moment too soon. Mexico has been hit so hard that hospitals in the capital were 87% full, and ambulance drivers waited hours to find an open bed for patients.

Paramedics Carolina Estrada, left, disinfects her partner Elvin Munguia after mobilizing a COVID-19 patient from his home to a hospital in the Iztapalapa district of Mexico City, Tuesday, Feb. 2, 2021. (AP PhotoMarco Ugarte)

Paramedics Carolina Estrada, left, disinfects her partner Elvin Munguia after mobilizing a COVID-19 patient from his home to a hospital in the Iztapalapa district of Mexico City, Tuesday, Feb. 2, 2021. (AP PhotoMarco Ugarte)

“Unfortunately, because of the saturation of the hospitals and the phone lines, we are waiting about three or four hours before they can assign us a hospital, and to get there,” said ambulance crew chief Eduardo Vigueras.

Vigueras noted patients are sometimes sent to the only available beds at hospitals, far away from the overwhelmed east side borough of Iztapalapa. He said some relatives get angry and aggressive with paramedics because of the delays in treatment.

Because some patients are in such bad shape, some families make an even harder choice. Paramedics say they often go to pick up a seriously ill coronavirus patient only to find their loved ones want to cancel the emergency call, because they know treatment is in such short supply and they may never see their relative again.

Paramedics in hazmat suits move a COVID-19 patient inside a biocontainment unit from his home to a hospital in the Iztapalapa district of Mexico City, Tuesday, Feb. 2, 2021. (AP PhotoMarco Ugarte)

Paramedics in hazmat suits move a COVID-19 patient inside a biocontainment unit from his home to a hospital in the Iztapalapa district of Mexico City, Tuesday, Feb. 2, 2021. (AP PhotoMarco Ugarte)

“A lot of people prefer to keep their relative at home, knowing that they are going to die, but with their loved ones there for the last few minutes, hours, days,” paramedic Paulina Cervantes said.

That desperation was on display Tuesday, when the Mexican government launched a new website for people over age 60 to register for appointments to get vaccines that the country doesn't yet have.

So many people logged on that the Health Department apparently didn’t have the bandwidth to handle requests. The department’s website was quickly overwhelmed and the registration page didn’t load, returning a message saying “This site can’t be reached.”

Paramedics in hazmat suits move a COVID-19 patient inside a biocontainment unit from his home to a hospital in the Iztapalapa district of Mexico City, Tuesday, Feb. 2 2021. (AP PhotoMarco Ugarte)

Paramedics in hazmat suits move a COVID-19 patient inside a biocontainment unit from his home to a hospital in the Iztapalapa district of Mexico City, Tuesday, Feb. 2 2021. (AP PhotoMarco Ugarte)

Once approved, the Russian vaccine would become the third to receive emergency approval in Mexico. The regulating agency approved the Pfizer vaccine in December and AstraZeneca’s in January. Mexico turned to the Russian vaccine following delays in obtaining others it was counting on.

A dozen countries have already approved the Russian vaccine for use, including Bolivia and Argentina, where López-Gatell visited in January to learn more about it. He acknowledged that there had a been a “legitimate concern” among Mexicans, but that the early results published Tuesday in the medical journal The Lancet should alleviate them.

“The Russian Sputnik V vaccine is safe, it has 92% efficacy against COVID, it can be used safely and is effective in seniors,” López-Gatell said. “It allows us now to accelerate the step of vaccination against COVID in Mexico.”

A paramedic wearing hazmat gear prepares to pick up a COVID-18 patient, from the Troya ambulance base in the Iztapalapa district of Mexico City, Tuesday, Feb. 2, 2021. (AP PhotoMarco Ugarte)

A paramedic wearing hazmat gear prepares to pick up a COVID-18 patient, from the Troya ambulance base in the Iztapalapa district of Mexico City, Tuesday, Feb. 2, 2021. (AP PhotoMarco Ugarte)

Mexico President Andrés Manuel López Obrador spoke with his Russian counterpart Vladimir Putin a week ago.

Mexico has so far given about 675,000 doses of vaccine, all of them from Pfizer, leaving a long way to go in a population of 126 million. On Tuesday, a second batch of the active substance in the AstraZeneca vaccine arrived in Mexico, where it will be packed and distributed through the rest of Latin America.

Paramedics in hazmat suits move a COVID-19 patient inside a biocontainment unit from his home to a hospital in the Iztapalapa district of Mexico City, Tuesday, Feb. 2, 2021. (AP PhotoMarco Ugarte)

Paramedics in hazmat suits move a COVID-19 patient inside a biocontainment unit from his home to a hospital in the Iztapalapa district of Mexico City, Tuesday, Feb. 2, 2021. (AP PhotoMarco Ugarte)

Paramedics Carolina Estrada, left, is disinfected by her partner Elvin Munguia after mobilizing a COVID-19 patient from his home to a hospital in the Iztapalapa district of Mexico City, Tuesday, Feb. 2, 2021. (AP PhotoMarco Ugarte)

Paramedics Carolina Estrada, left, is disinfected by her partner Elvin Munguia after mobilizing a COVID-19 patient from his home to a hospital in the Iztapalapa district of Mexico City, Tuesday, Feb. 2, 2021. (AP PhotoMarco Ugarte)