CNN Don Lemon Tonight September 28, 2021 02:40:00
>> you say the durability, meaning how long having infection will protect you against getting covid but some people have gotten second infections. so we don't know how durable it is, correct? >> right. we don't know how durable the vaccines are and obviously, people are getting boosters because the vaccines that the immunity hasn't been that durable, particularly in older people. we're seeing rising breakthrough infections. we don't know how durable. it will probably be the case while there is a period of immunity offered by natural infection, it won't be in perpt duty forever, eventually that...