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Tove Harris @toveharris.bsky.social · 12/01/2026

1/5 Virenpersistenz bei durch Coronaviren ausgelöste Katzenkrankheit - #LongCOVID Forscher der UC Davis entdeckten, dass das für die Katzeninfektiöse Peritonitis (FIP) verantwortliche Katzen-Coronavirus ein viel breiteres Spektrum an Immunzellen infiziert als bisher angenommen. #COVID #COVID19

Scientific Frontline: "At a Glance" Summary
• Main Discovery: Researchers at UC Davis discovered that the feline coronavirus responsible for Feline Infectious Peritonitis (FIP) infects a much broader range of immune cells than previously believed, including B and T lymphocytes, rather than being limited to a single cell type.
• Methodology: The team examined lymph node samples from cats with naturally occurring FIP, analyzing the presence of viral material and evidence of active viral replication within specific immune cell populations.
• Mechanism: The study confirmed that the virus actively replicates inside these critical immune cells—B lymphocytes (antibody producers) and T lymphocytes (infection fighters)—instead of merely leaving behind inert fragments.
• Key Finding: Traces of the virus were found to persist in immune cells even after antiviral treatment was concluded and the cats appeared clinically healthy, suggesting a mechanism for disease relapse or long-term immune disruption.
• Implication: Because some immune cells have multi-year lifespans, this persistence offers a valuable model for understanding human long COVID and chronic post-viral syndromes, providing a rare opportunity to study viral reservoirs in immune tissues inaccessible in human patients.

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Tove Harris @toveharris.bsky.social · 12/01/2026

2/5 Darunter B- und T-Lymphozyten. Das Katzen-Coronavirus sei somit nicht auf einen einzigen Zelltyp beschränkt. Die Studie bestätige, dass sich das Virus aktiv in diesen wichtigen Immunzellen – B-Lymphozyten und T-Lymphozyten – vermehre. #Coronaviren #COVID #COVID19 #LongCOVID

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Tove Harris @toveharris.bsky.social · 12/01/2026

3/5 Es hinterlasse nicht nur inaktive Fragmente. Spuren des Virus persistierten in Immunzellen selbst nach Abschluss der antiviralen Behandlung und der scheinbaren Genesung der Katzen. Dies deute auf einen Mechanismus für Krankheitsrückfälle oder langfristige Immunstörungen hin. #COVID #LongCOVID

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