I would be surprised if Anna or Abbie is seeing their family considering they're several states (or a continent) away. As far as I know Abbie's family are all in Oklahoma. Anna's family is in Florida, Texas, North Carolina, Zambia, and maybe some place I forgot.
I hope the Seewalds are smarter than that. Especially since Jessica and her husband are essential personnel (cops).
I'm sure Lauren is hanging with Swansons. We know from photos that she was at the same family night as Anna. It wouldn't surprise me if Kendra was hanging with the Caldwells and we know about Joy and Austin.
The parents are more likely to be seriously sick than the kids. I agree that all those pregnancies likely took a toll on Michelle. I worry about Josie, since she seems so fragile. I don't want anyone to die and I hope the kids don't get too sick.