By Michael Erman NEW YORK (Reuters) – Around two-thirds of adults in the United States do not plan to get updated COVID-19 booster shots soon, according to a survey conducted by the Kaiser Family Foundation (KFF), a health policy nonprofit organization. Only a third of adults polled said they either already received the updated shots or plan to get the booster as soon as possible, the poll found. The Pfizer/BioNTech and Moderna Inc shots, updated to target more recently circulating Omicron subvariants of the coronavirus as well as the original strain, were authorized by the U.S. Food and Drug …