Just over the last couple days, since my Mom got sick, I’ve been seeing references to “long covid ” and hadn’t heard that before? And I also heard from an old friend this past week saying she’d been sick with covid for a month - testing positive and feeling like cr@p the entire time (one of the first to go out and get jabbed as soon as it was available 😞). So what is this “long covid” thing we’re referring to now? Thanks in advance.