The idea of mixing and matching different COVID-19 vaccines is gaining momentum, with a special focus on letting Johnson & Johnson (J&J) vaccine recipients get a dose produced by a different company. The J&J produces inferior results compared to the vaccines that were created using messenger RNA technology. The main reason to allow heterologous vaccination schedules would be with the aim to give people who got a J&J jab to get a boost in protection. “I think what needs to be done—and I believe will be done—is that there will be a degree of flexibility that will be left up to the individual based on their individual situation,” Dr. Anthony Fauci, the director of the National Institute of Allergy and Infectious Diseases, said on “Fox News Sunday.” Scientists with Fauci’s agency and other institutions have been studying whether mixing and matching vaccines is provokes immune system responses and is and safe. They …