PORTLAND, Ore. (AP) — The Oregon Health Authority has asked the state’s vaccine providers to immediately stop administering the single shot Johnson & Johnson COVID-19 vaccine. The move follows guidance of the federal government regarding the appearance of blood clots in six women across the country. The blood clots have affected women ages 18 to 48. Oregon Public Broadcasting reports Johnson & Johnson shots have been a small part of the vaccination campaign in the Pacific Northwest, with 81,255 Oregonians having received the Johnson & Johnson vaccine, out of almost 1.5 million who are fully or partially vaccinated.