Policy makers and mainstream news anchors have promised the public that the COVID-19 vaccine rollout worldwide would reduce symptoms, and thereby cases and deaths associated with COVID-19. While this vaccine rollout is still in progress, there is a large amount of public data available that permits an analysis of the effect of the vaccine rollout… Continue reading Worldwide Bayesian Causal Impact Analysis of Vaccine Administration on Deaths and Cases Associated with COVID-19: A BigData Analysis of 145 Countries
Category: Infectivology
Comparing SARS-CoV-2 natural immunity to vaccine-induced immunity: reinfections versus breakthrough infections
Reports of waning vaccine-induced immunity against COVID-19 have begun to surface. With that, the comparable long-term protection conferred by previous infection with SARS-CoV-2 remains unclear. Methods We conducted a retrospective observational study comparing three groups: (1)SARS-CoV-2-naïve individuals who received a two-dose regimen of the BioNTech/Pfizer mRNA BNT162b2 vaccine, (2)previously infected individuals who have not been… Continue reading Comparing SARS-CoV-2 natural immunity to vaccine-induced immunity: reinfections versus breakthrough infections
Cross-reactive memory T cells associate with protection against SARS-CoV-2 infection in COVID-19 contacts
Cross-reactive immune responses to SARS-CoV-2 have been observed in pre-pandemic cohorts and proposed to contribute to host protection. Here we assess 52 COVID-19 household contacts to capture immune responses at the earliest timepoints after SARS-CoV-2 exposure. Using a dual cytokine FLISpot assay on peripheral blood mononuclear cells, we enumerate the frequency of T cells specific… Continue reading Cross-reactive memory T cells associate with protection against SARS-CoV-2 infection in COVID-19 contacts
Thyroiditis after Coronavirus Disease 2019 (COVID-19) mRNA Vaccine: A Case Series
Highlights1)Thyrotoxicosis with palpitation, and neck tenderness is the most common presentation of thyroiditis. The patients with new onset of thyrotoxicosis should be asked about history of mRNA-vaccine injection for the possible etiology. 2)mRNA vaccine induced thyroiditis could occur 10-20 days after the first dose or the second dose. 3)Management is to relieve the symptom of… Continue reading Thyroiditis after Coronavirus Disease 2019 (COVID-19) mRNA Vaccine: A Case Series
Association between vitamin D status and risk of covid-19 in-hospital mortality: A systematic review and meta-analysis of observational studies
Some earlier studies reported higher risk of COVID-19 mortality in patients with vitamin D deficiency, while some others failed to find such as association. Due to inconsistences between earlier meta-analyses and needs for an updated study, we conducted current systematic review and meta-analysis on the association between vitamin D status and risk of COVID-19 in-hospital… Continue reading Association between vitamin D status and risk of covid-19 in-hospital mortality: A systematic review and meta-analysis of observational studies
Vaccine effectiveness against SARS-CoV-2 infection with the Omicron or Delta variants following a two-dose or booster BNT162b2 or mRNA-1273 vaccination series: A Danish cohort study
In this brief communication we are showing original research results with early estimates from Danish nationwide databases of vaccine effectiveness (VE) against the novel SARS-CoV-2 Omicron variant (B.1.1.529) up to five months after a primary vaccination series with the BNT162b2 or mRNA-1273 vaccines. Our study provides evidence of protection against infection with the Omicron variant… Continue reading Vaccine effectiveness against SARS-CoV-2 infection with the Omicron or Delta variants following a two-dose or booster BNT162b2 or mRNA-1273 vaccination series: A Danish cohort study
SARS-CoV-2 Omicron VOC Transmission in Danish Households
The Omicron variant of concern (VOC) is a rapidly spreading variant of SARS-CoV-2 that is likely to overtake the previously dominant Delta VOC in many countries by the end of 2021. We estimated the transmission dynamics following the spread of Omicron VOC within Danish households during December 2021. We used data from Danish registers to… Continue reading SARS-CoV-2 Omicron VOC Transmission in Danish Households
Evaluating the number of unvaccinated people needed to exclude to prevent SARS-CoV-2 transmissions
Vaccine mandates and vaccine passports (VMVP) for SARS-CoV-2 are thought to be a path out of the pandemic by increasing vaccination through coercion and excluding unvaccinated people from different settings because they are viewed as being at significant risk of transmitting SARS-CoV-2. While variants and waning efficacy are relevant, SARS-CoV-2 vaccines reduce the risk of… Continue reading Evaluating the number of unvaccinated people needed to exclude to prevent SARS-CoV-2 transmissions
Therapies to Prevent Progression of COVID-19, Including Hydroxychloroquine, Azithromycin, Zinc, and Vitamin D3 With or Without Intravenous Vitamin C: An International, Multicenter, Randomized Trial
Therapies to Prevent Progression of COVID-19, Including Hydroxychloroquine, Azithromycin, Zinc, and Vitamin D3 With or Without Intravenous Vitamin C: An International, Multicenter, Randomized TrialKarin Ried, Taufiq BinJemain, Avni Sali Published: November 25, 2021 (see history) DOI: 10.7759/cureus.19902 Cite this article as: Ried K, BinJemain T, Sali A (November 25, 2021) Therapies to Prevent Progression of… Continue reading Therapies to Prevent Progression of COVID-19, Including Hydroxychloroquine, Azithromycin, Zinc, and Vitamin D3 With or Without Intravenous Vitamin C: An International, Multicenter, Randomized Trial
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