Johnson & Johnson COVID vaccines clear for use in Pa., N.J. after feds give OK Updated 9:58 AM; Today 9:55 AM COVID-19 vaccines are administered at a drive-through clinic in January outside Dorney Park. Following federal guidance, Pennsylvania and New Jersey have again cleared the use of the single-dose Johnson & Johnson vaccine.Saed Hindash | For lehighvalleylive.com Facebook Share The health departments in both states announced Friday evening that providers were notified of the change in the vaccine’s status. Its use was paused this month as the federal Centers for Disease Control and Prevention and the Food and Drug Administration reviewed the cases of rare but potentially serious blood clots.