I have struggled unsuccessfully to link this message to a remark made by Soren Spanner a week or two ago asking whether anyone has tried to distribute vaccine to remote sites by drone? I'm surprised that a debate on this subject has not yet reached TECHNET. Luckily the global debate seems healthy! Take this link for example sent to me by Anne McArthur, my wife, over a distance of 2.4 meters just now:
Interesting. As mentioned by Soren, the altitude should be in our 'cool-interest', the range is already enough to serve zones with difficult access, the flights could be automatically navigated and the load of a kilogram could carry an interesting quantity of vaccine. Assuming that vaccine continues to be administered by a qualfied team of medical personnel then the main benefit would be the elimination of the cold-chain equipment burden for remote outreach immuniization. The scenario might be, for example, a two-week circuit made with porters and animals to a group of mountain villages - less to carry and drones to meet the team as they arrive at the villages.
The benefits and the costs need careful assessment once the technology is shown to be successful.