Family visiting during due date

So recently my sister told me she would be visiting the week I’m due . She’d be flying in from the east coast I live on the west coast . I haven’t seen my sister in 3 years she will be bringing my 2 nephews . I don’t mind that she’s coming but I’m kind of worried about germs with the baby being here . Obviously I’m not going to tel her she can’t come but I feel a little on edge which isn’t normally like me. Has anyone ever had a full hose after coming home from the hospital ? Should I be super concerned or just take precautions ?

What would you do ? Or say ?

My mother will also be here because she is watching my other littles