That, or "Covid behaves like viruses usually do", describes plenty of headlines of the past 15 months. Remember how everyone was worried that antibody levels dr

That, or "Covid behaves like viruses usually do", describes plenty of headlines of the past 15 months. Remember how everyone was worried that antibody levels drop after an infection? Judging by the media coverage, you'd think memory cells and T cells were a recent, Covid-related discovery. We've known about them since the sixties and they continue to work as advertised.