And even if Nana is vaccinated for everything, we live in the age of Covid, and vaccination doesn’t stop one from passing the infection on. (It does briefly reduce the risk of catching it, which is great, and provides durable protection against severe disease, which is fantastic. Still worth getting boosters even though the protection from infection is temporary and imperfect.) About 10% of children already have Long Covid, and I sure as hell wouldn’t want my kid becoming the next one.