Good: + ~90% of individuals achieve immunity. + no significant side-effects. Not so good: - two doses needed, 3 weeks apart, immunity after one month from first dose. Slow rollout. - -80C storage and transport needed. Challenging, but doable in developed countries, but still may slow down mass rollout. Not feasible in many developing countries. I still wonder about long-term immunity. Anyone can share any insight?
Developing countries have youth immunity. When you convolve covid hospitalization / IFR as function of age with age distribution, developing countries have no risk whatsoever from COVID. that's why Brazil and India are nearing herd immunity with basically no serious medical infrastructure saturation. Median age in Africa is 19... No fks given. Covid vaccine is just for old people/developing countries.
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