Long-term survive of Aliarcobacter butzleri in two models symbiotic interaction with Acanthamoeba castellanii.

Aliarcobacter butzleri (formerly known as Arcobacter butzleri) is an emerging food-borne zoonotic pathogen that establishes in vitro endosymbiotic relationships with Acanthamoeba castellanii, a free-living amoeba. Previously, we described that this bacterium acts as an endocytobiont of A. castellanii, surviving for at least 10 days in absence of bacterial replication.

[Clinical evolution and levels of anti-S SARS-CoV-2 IgG in rheumatic disease and COVID-19].

Controversies still exist regarding the humoral response to the virus SARS-CoV-2 in convalescent patients and seroconversion in patients with autoimmune diseases. There are few reports on the clinical and evolution of COVID-19 in the latter group. The objective was to examine the clinical and evolutionary characteristics associated with COVID-19 and the percentage of seroconversion in people with rheumatic diseases.