University Medical Center opened its online registration for several thousand doses of COVID-19 vaccine at noon Saturday.

You can register to be vaccinated by UMC at the El Paso County Coliseum by clicking here. Based on previous weeks, demand for the vaccine will far outstrip available supply and it will be difficult to get through. The system will allow you to try to log in every 30 seconds.

UMC is receiving 6,825 doses of vaccine from the state this coming week, down from 8,775 this past week.

Here are some tips on signing up.

• Have a separate device for every person you plan to register. Because the doses go so fast, it is unlikely a couple will have time to register one person and then another. Try to do both registrations simultaneously; it helps to have more than one person involved.
• Open up the link before the scheduled start of registration, then hit refresh until a registration screen appears.
• If you don’t have immediate success, keep checking the site for 30-45 minutes. Some people have reported being able to register at that time.

If you register successfully, you’ll get an email from UMC and eventually a phone call setting an appointment time.

UMC is one of several sites in El Paso offering COVID-19 vaccines. For information on accessing other sites, see El Paso Matters’ vaccine FAQ.

Overall, El Paso is receiving 15,925 vaccine doses this coming week, up from 15,050 this past week. Here’s how the doses are allocated by the state in El Paso.

• University Medical Center: 6,825 doses, mostly to be administered at its hub at the Coliseum.

• City of El Paso: 6,000 doses, mostly for administration at its vaccine hubs. The city has a hub near the airport and plans to open a second hub this coming week at Don Haskins Recreation Center in West El Paso. Responding to direction from the state, the city says it is reserving 20% of doses — 1,200 this coming week — for people over 75.

• Texas Department of State Health Services Public Health Region 9/10 headquarters: 500 doses.

• The Hospitals of Providence Memorial Campus: 1,000 doses.

• Wellmed clinics in West, Northeast, East and Central El Paso: 400 doses at each of the four locations.

The University of Texas at El Paso, which has been receiving 975 doses a week in recent weeks to vaccinate students, faculty and staff, is not receiving vaccines this coming week.