have tested positive for covid over the course of this pandemic. so what do you make of these statistics and how much do we need still to learn about these long haulers? >> we need to learn so much. i think that the thing about covid not just as a new disease, but it's a new disease that seems like it's also leading to a new chronic illness. and this is why, again, vaccination is so important. because it's not just about who doesn't die from this virus, who doesn't get hospitalized. what are the consequences for someone's entire life? to reiterate about children, their lives, god willing, will be longer than the rest of ours, and their brains are being developed. we need to understand the risk to them of getting covid and having a symptom like this brain fog may effect their learning in school, their ability to go to college or their ability to hold down a job when they're an adult. this reiterates how important it is in prevention of the virus. we don't know of the consequences long term. >> we have new information from the former white house