Transcript for Moderna Vaccine preparing for cross-country distribution
Good morning to you. The modern vaccine, the latest authorized for use in the U.S. Started moving just moments ago. It will go from freezers to xes and into trucks. Then it's on to airports for the trip to dozens of sites across the U.S. 5.9 million doses to start. This after a week that sought 272,000 Americans roll up their sleeves for the pfizer vaccine. However new cases are out pacing vaccinvaccinations. Here in the us we're moving towards 18 million new cases. Deaths have surpassed 316,000. In California, Dr. Anthony Fauci says some areas of the state are on the cusp of becoming overrun. According to a health and human services memo obtained by ABC news, in nearly a third of the country icu beds are now more than 80% full. We start with the encouraging news on the vaccine rollout. Gio Benitez is in olive branch, Mississippi just outside Memphis. Gio, another critical day. Reporter: Absolutely, whit, critical indeed. Take a look behind me. You can see the FedEx trucks pulled up to the loading docks, getting ready to ship the vaccines as the nation desperately awaits them. This morning, mckes concern is preparing the modern vaccine for cross country shipping. These images just in. The gear room, where teams suit up with cold weather gear going into the freezers were the vaccines are kept at negative 4 degrees. They're packed and loaded on to these trucks. FedEx, just over the border in Memphis picks them up in Mississippi, U.P.S. Picking them up in Louisville before getting them on planes for those critical cargo flights. This week between pfizer and modern we have allocated 7.9 million doses of vaccine and we are ready for that distribution. Reporter: Some states are concerned over allocation of the vaccine. General Perna of "Operation warp speed" taking full responsibility. I want to make sure we're 100% committed to fair and equitable distribution to everybody in the United States Reporter: Perna saying the country is on track for shipping 20 million doses by the end of the month. Saturdernoon a CDC advisory committee voting 11-0 recommending the modern vaccine for people 18 and up. Still, a small number of health care workers in Alaska and Illinois have reported allergy reactions after getting the vaccine. The Illinois hospital temporarily pausing vaccis Friday and Saturday, but will resume today. The CDC, which is monitoring the ports, issuing guidance for how people with histories of allergies should move forward, saying anyone who had a severe reaction to a covid-19 vaccine should not get the second dose. I think it's important for the public to understand these still are very rare events. We are following them. We know how to deal with the events. We're taking measures to monitor them at the time of injection and around that period of time Reporter: Let's take you back live inside the distribution center. You can see that right there. So many people working so hard. They're using a massive 15,000 square foot freezer right there, 35 packing stations inside that freezer, just a monumental effort under way in Mississippi. Whit? That's for sure. Need all the hope we can get. Gio, thank you so much.
This transcript has been automatically generated and may not be 100% accurate.