MSNBC Craig Melvin Reports December 3, 2021 16:26:00
We know cases of this new variant were present in europe before it was even identified by south african scientists. it's been spreading under the radar for a while. and we're only just now picking it up here. but the question is how concerned should we be? there's a lot of important unanswered questions about omicron. how effective are the current vaccines against it? is it more transmissible than delta? the south african data is worrisome are the treatment options that we have effective against it? these are all really big questions. the scientific community is working together doing experime...