Transcript for Weather snarls COVID vaccine shipments in the US
That severe weather is also having a major impact on the efforts to vaccinate Americans. This morning, more than 41 million Americans have received at least one dose of the vaccine, but at least 40 states are reporting some sort of disruption because of the storm. Eva pilgrim joins us now with more this morning. Good morning, Eva. Reporter: Good morning, Michael. The weather is slowing down vaccinations. Here in New York nearly all of the vaccines that were supposed to arrive this week haven't arrived and it's a problem all across the country thanks to this weather. This morning, mother nature halting the supply of covid-19 vaccines, at least 40 states affected forcing appointment cancellations from coast to coast. Across the country people forced to reschedule their vaccinations. New Jersey's governor now says his state will shut down mass vaccination sites because they just don't have the supply. Because of the nationwide weather situation, less because of what's going on in New Jersey right now, we know there are going to be supply chain issues. Reporter: Much of new Jersey's vaccines stranded in the midwest and south where massive snow has pummeled shipping routes. The shipping delay now postponing appointments even in states like Arizona that aren't seeing the winter weather. They said it was due to the weather, that the shipment was so delayed but we have not had any bad weather here and just happens that the rest of the country affected our shipments. Reporter: In Massachusetts, the governor looking at sending the National Guard to bring vaccines to his state. We're currently talking to the National Guard about -- and they will do this -- about going down to Kentucky and Tennessee, which is where this stuff is currently located and bringing it back. Reporter: In Chicago, city officials were also forced to close megavaccination sites in recent days, but demand is soaring for those smaller locations that remained open, there were almost no cancellations. I've really been want tock get this vaccine so if I had to walk, I would have walked the hour over here. I wouldn't have missed this appointment. Reporter: And after promising that every American will have access to a vaccine by the end of July, the white house is pushing to get back on track. Dr. Fauci saying once this weather clears, we will have to work double time to make up for it. Michael. In the meantime, Eva, there has been a positive development involving that pfizer vaccine. Reporter: That's right, Michael. Pfizer is launching clinical trials in pregnant women and will be studying the newborns to see if those mothers pass on the antibodies to those babies. The recommendation for now, though, from the CDC, if you're pregnant, talk to your doctor about what's best for you and your baby. Michael. All right, Eva, thank you.
This transcript has been automatically generated and may not be 100% accurate.