I mean, it almost seems to me, if I can use this metaphor, that some of these countries already had the, kind of, antibodies in their system, because they had experience with maybe Ebola or the first SARS.
Quiero decir, casi me parece, si puedo usar esta metáfora, que algunos de estos países ya tenían anticuerpos en su sistema, porque tenían experiencia con el Ébola o el primer SARS.