Germany's battle against the coronavirus as it became the latest country to hit the milestone of 1 million confirmed cases Friday.Man-sized freezers such as those manufactured by family-owned firm Binder GmbH could become a key part of the vast immunization program the German government is preparing to roll out when the first vaccines become available next month.That's because one of the front-runners, a vaccine made by German company BioNTech together with US pharmaceutical giant Pfizer, needs to be cooled to minus 70 degrees Celsius (minus 94 degrees Fahrenheit) for shipping and storage.Ensuring such temperatures, colder even than an Antarctic winter, is just one of the many challenges that countries face in trying to get their.