Covid vaccine: First ‘milestone’ vaccine offers 90% protection
Good:<p>+ ~90% of individuals achieve immunity.<p>+ no significant side-effects.<p>Not so good:<p>- two doses needed, 3 weeks apart, immunity after one month from first dose. Slow rollout.<p>- -80C storage and transport needed. Challenging, but doable in developed countries, but still may slow down mass rollout. Not feasible in many developing countries.<p>I still wonder about long-term immunity. Anyone can share any insight?