New research to be presented at this year’s European Congress of Clinical Microbiology and Infectious Diseases (ECCMID 2022, Lisbon, 23–26 April) suggests that many of the symptoms connected to post-COVID syndrome (PCC, also known as long COVID) could be linked to the effect of the virus on the vagus nerve—one of the most important multi-functional nerves in the body. The study is by Dr. Gemma Lladós and Dr. Lourdes Mateu, University Hospital Germans Trias i Pujol, Badalona, Spain, and colleagues.