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1.
Social Science Open Access Repository; 2021.
Non-conventional in German | Social Science Open Access Repository | ID: grc-748086

ABSTRACT

Am 17. März 2021 ist Tansanias Präsident John Pombe Magufuli unerwartet verstorben. Unter seiner Nachfolgerin Samia Suluhu Hassan, der bisherigen Vizepräsidentin, steht das Land vor wichtigen Richtungsentscheidungen. Ihre ersten Tage im Amt hat sie genutzt, um politische Änderungen einzuleiten. Zum einen nimmt sie Covid-19 ernst, anders als ihr Vorgänger;ein Expertenkomitee soll den Umgang des Landes mit der Pandemie überprüfen. Zum anderen werden Einschränkungen von Presse- und Meinungsfreiheit aufgehoben. Ob die neue Präsidentin ein eigenes Profil entwickeln kann und Tansania so auch regional wie international wieder an Bedeutung gewinnt, ist zwar noch offen. Doch die Zeichen stehen auf Wandel. (Autorenreferat)

2.
researchsquare; 2021.
Preprint in English | PREPRINT-RESEARCHSQUARE | ID: ppzbmed-10.21203.rs.3.rs-820910.v1

ABSTRACT

T-cell immunity is central for the control of viral infections. CoVac-1 is a peptide-based vaccine candidate, composed of SARS-CoV-2 T-cell epitopes derived from various viral proteins, combined with the toll-like receptor 1/2 agonist XS15 emulsified in Montanide TM ISA51 VG, aiming to induce superior SARS-CoV-2 T-cell immunity to combat COVID-19. We conducted a Phase I open-label trial, including 36 participants aged 18 to 80 years, who received one single subcutaneous CoVAC-1 vaccination. The primary endpoint was safety analyzed until day 56. Immunogenicity in terms of CoVac-1-induced T-cell response was analyzed as main secondary endpoint until day 28. No serious adverse events and no grade 4 adverse events were observed. Expected local granuloma formation was observed in all study subjects, while systemic reactogenicity was absent or mild. SARS-CoV-2-specific T-cell responses targeting multiple vaccine peptides were induced in all study participants, mediated by multifunctional T-helper 1 CD4 + and CD8 + T cells. CoVac-1-induced interferon-γ T-cell responses by far surpassed those detected in COVID-19 convalescents and were unaffected by current SARS-CoV-2 variants of concern (VOC). Together, CoVac-1 showed a favorable safety profile and induced broad, potent, and VOC-independent T-cell responses, supporting the presently ongoing evaluation in a Phase II trial for patients with B-cell/antibody deficiency. Funded by the Ministry of Science, Research and the Arts Baden-Württemberg, Germany; ClinicalTrials.gov number, NCT04546841.


Subject(s)
COVID-19 , Granuloma , Immunologic Deficiency Syndromes , Lymphoma, T-Cell
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