> "Having antibodies does not guarantee immunity." Sure, but it seems to have worked so far. And if having natural antibodies doesn't give long-term immunity,

> "Having antibodies does not guarantee immunity." Sure, but it seems to have worked so far. And if having natural antibodies doesn't give long-term immunity, then will vaccine-induced antibodies? We don't know. > "How long IgM and IgG antibodies remain detectable following infection is not known." Having detectable antibodies is not the same thing as immunity.