@divine1966 - From what I read it's the Chinese and Russian vaccines that are likely to be an issue. Those are mainly approved for emergency use in developing countries like ours because that was all we could get our hands on. The vaccines being used in the US are acceptable as far as I have read. Our government has orders in for others like Pfizer and AstraZeneca. Supposedly they are in negotiations with J&J too, but last I heard they are stalled. To date, the only other vaccine that has arrived here is Pfizer and that was just a few crumbs they threw us - fewer than 500,000 doses.