The situation highlights the challenge posed by the two vaccines that have so far been approved in the United States — both need to be kept cold. By Nicholas Bogel-Burroughs from NYT World https://ift.tt/2L6oDg8
The situation highlights the challenge posed by the two vaccines that have so far been approved in the United States — both need to be kept cold. By Nicholas Bogel-Burroughs from NYT World https://ift.tt/2L6oDg8