Rutgers University will require students returning to campus this fall to prove they’ve been vaccinated against Covid-19, becoming one of the first institutions in the U.S. to mandate the immunizations. Rutgers President Jonathan Holloway announced the change Thursday, saying in a statement the university plans to update its immunization requirements for students on campus to include the Covid-19 vaccine. Students will have to prove they’ve been fully vaccinated with any of the three shots currently cleared for use in the U.S. — Pfizer’s, Moderna’s or Johnson & Johnson’s — though students who are under 18 years old will only be...