PORTLAND, Ore. (AP) — Officials from the Oregon Health Authority reported Friday that four people in Oregon, who have been fully vaccinated with the COVID-19 vaccine, tested positive for the coronavirus. Oregon is among the first states nationwide to report “breakthrough cases” — people who tested positive for coronavirus at least 14 days after receiving their second dose of the COVID-19 vaccine. Officials say it is likely Oregon, and other states, will report more cases like this. Health experts are monitoring the cases and genome sequencing is underway, with results expected next week.