Also read: Why your health plan premium is suddenly spikingThe world has never seen such a distribution puzzle -- it’s been called the “largest and most complex logistical exercise ever." Each of the vaccines nearing approval presents different challenges, from the ultra-cold chain required for Pfizer Inc.
and BioNTech SE’s shot to the more mundane but equally challenging difficulties in getting inoculations such as AstraZeneca Plc’s across the developing world.These are some of the sectors and companies in traders’ sights for their roles in the global vaccine rollout:Cold StorageAll of the vaccine candidates require some degree of cooling, with Pfizer’s shot needing storage at around minus 70 degrees Celsius (minus 94 degrees.