Within an award-winning study Dr. Pia Gattringer at the medical university of vienna found out that about 20% of persons recovered from an SARS-CoV-2 infection did not produce sufficient amounts of protecting antibodies to the virus. These so called non-responders therefore are not protected against re-infection and possibly also not against severe courses of the disease Source: Die Presse vom 3.12.2022

Within an award-winning study Dr. Pia Gattringer at the medical university of vienna found out that about 20% of persons recovered from an SARS-CoV-2 infection did not produce sufficient amounts of protecting antibodies to the virus. These so called non-responders therefore are not protected against re-infection and possibly also not against severe courses of the disease Source: Die Presse vom 3.12.2022

Researchers identified changes to the brain stem and frontal lobe in patients months after COVID-19 infectionThe affected brain regions are linked with fatigue, insomnia, anxiety, depression, headaches and cognitive problems.Up to 20% of infected subjects showed symptoms of long covid. These mainly include difficulty of thinking or concentrating, headache, sleep problems, lightheadedness, pins-and-needles sensation, change in smell or taste, and depression or anxiety. https://press.rsna.org/timssnet/media/pressreleases/14_pr_target.cfm?id=2381