Jeff Johnson, 49, of Brighton, Colorado, received the Moderna coronavirus vaccine at the Salud Family Health Centers One week later he started experiencing pain and swelling in his left leg and said he thought he was going to die Johnson was diagnosed with deep vein thrombosis (DVT), which is when a clot forms deep in the body such as in the thigh or lower leg According to Johnson, his doctor said it's possible the blood clot could have been caused by the vaccine DVT is different than the blood clots in the brain that have been linked to the J&J vaccine, which led to a pause recommended b...