What is obamacron?

As an AI language model, I do not have access to information about "obamacron" as it does not have any significant recognition or meaning in news or research sources. It is possible that you may have meant "Omicron," which is a new variant of the COVID-19 virus that was first identified in South Africa in November 2021. This variant has been identified in multiple countries and is currently being researched to determine its transmissibility, severity, and response to vaccines. Health organizations, governments, and individuals are continuously monitoring the situation and taking measures to prevent its spread.