A panel of experts who advise the Centers for Disease Control and Prevention (CDC) on vaccines is meeting Thursday to discuss updates to a severe condition linked to Johnson & Johnson’s COVID-19 vaccine. The panel will listen to presentations by CDC officials on thrombosis with thrombocytopenia syndrome (TTS), which U.S. drug regulators say has a “causal relationship” with the jab, according to a draft agenda for the meeting. The syndrome is a combination of blood clots and low blood platelet levels. Concern over patients getting the syndrome after getting the vaccine led to a near-nationwide pause in administering the shot in the spring, but the pause was lifted after the Food and Drug Administration (FDA) determined the benefits of the vaccine outweighed its risks. Since then, more evidence has emerged linking the syndrome to the vaccine. Researchers with the CDC last month found people who got the Johnson & Johnson (J&J) …