While the pathogen Chlamydia pneumoniae has been linked to asthma in the past, new research finds over two-thirds of people with severe asthma test positive for Chlamydia-specific antibodies, suggesting this antigen could be a good biomarker for detecting those at risk for asthma. Additional research finds that, in some cases, antibiotic therapy could improve asthma symptoms. Guest: Eduard Drizik, University of Massachusetts, Amherst