US government and two of the nation's largest pharmacy chains kick off a nationwide campaign to vaccinate nursing home residents against COVID-19 on Monday, a week after the first vaccines authorized in the country began being administered to healthcare workers.The program is the latest effort to control a pandemic that has killed more than 300,000 people in the country and is straining the capacity of healthcare systems in some states.The United States has two authorized vaccines against the virus, one developed by Pfizer Inc and German partner BioNTech SE that was cleared for use on Dec.
11 and one by Moderna Inc that was approved on Friday.Some 2.9 million shots of the Pfizer vaccine were distributed last week and mostly given to.