By Susan Montoya Bryan, Associated Press Nearly one quarter of New Mexico's population has registered to receive a COVID-19 vaccination, but officials at some of the state's largest health care providers said Monday that inconsistencies with the supply chain are among the barriers to getting more shots in arms. More than half a million residents have registered on New Mexico's vaccine website. Health officials have been urging people to be patient as the focus shifts from vaccinating front-line health care workers, first responders and those at long-term care facilities to senior citizens. Those with chronic illnesses that put them at higher risk also are on the list.