SEATTLE (AP) — On the anniversary of the first confirmed COVID-19 case in the United States, Amazon said Thursday it will host a one-day vaccination drive in Seattle this weekend to inoculate as many as 2,000 people. The tech giant, which has also offered its help to the new Biden administration as it tries to speed vaccine rollouts nationwide, said it would partner with Virginia Mason Medical Center on the effort Sunday. Meanwhile, Washington state health officials are plowing ahead with plans to open four mass vaccination sites next week, despite logistical concerns that include questions about vaccine supply.