It’s important to discuss COVID with students at an age appropriate level. Use terms that make sense to your students and encourage them to make safe decisions without scaring them unnecessarily. Some great resources listed here!
Social stories are an awesome way to explain COVID-19 to kids. I use one from the Facebook group ‘Reach Dane’ for my preschool through 1st grade families. I’ve also found that my kids students have needed to discuss this multiple times as time goes on. It’s tough on little kids but there are great tools available for us to resource parents with.