Listen to Dr. Tom Roselle, DC discuss immune response triggered by COVID-19 infection that may lead to respiratory and heart symptoms, neurological symptoms, and digestive symptoms. Also discussed: how COVID and vaccines may activate other viral patterns such as EBV, CMV, herpes, and others according to research in PubMed. Pub Med is a health resource supporting the search and retrieval of biomedical and life sciences literature with the aim of improving health–both globally and personally. The PubMed database contains more than 35 million citations and abstracts of biomedical literature.