Today's news trumpets the Pfizer vaccine almost ready for FDA approval in the U.S.A. Apparently, it took a novel approach, replicating a harmless part of the virus's RNA. I leave it to my betters to explain the biology. In any case, it seems to be not appropriate for the Philippines. For one thing, it requires two shots, several weeks apart. For another, storage and transportation requires super-cooling, some 90-odd degrees below the freezing point of water. I leave it to others to explain the chemistry, something to do with liquid nitrogen. And finally, it was funded by Pfizer privately, not by the Warp Speed (or whatever it's called) initiative of the U.S. Congress stimulus bill. This means, I presume, that Pfizer is free to charge what the market will bear.