Hospital Sisters Health System, which operates St Francis in Litchfield, Holy Family in Greenville, and St. Joseph’s Hospitals of Highland and Breese, will follow a new federal requirement that employees get the Covid 19 vaccine.    In a memo to employees, HSHS officials said employees who continue to refuse to use the vaccine will lose their jobs.   The memo said employees who fail to comply with the vaccination requirement will be taken off the schedule and placed on unpaid administrative leave.  Two weeks after that, HSHS officials will consider lack of proof of vaccination or an approved exemption for medical or religious reasons to be a voluntary resignation.  CMS is requiring health care workers to be fully vaccinated by Jan. 4.   Many health care experts expect the federal lawsuits to end up in front of the U.S. Supreme Court.