Systemic and mucosal IgA responses are variably induced in response to SARS-CoV-2 mRNA vaccination and are associated with protection against subsequent infection

Although SARS-CoV-2 infects the upper respiratory tract, we know little about the amount, type, and kinetics of antibodies (Ab) generated in the oral cavity in response to COVID-19 vaccination. We collected serum and saliva samples from participants receiving two doses of mRNA COVID-19 vaccines and measured the level of anti-SARS-CoV-2 Ab. We detected anti-Spike and …

Continue reading Systemic and mucosal IgA responses are variably induced in response to SARS-CoV-2 mRNA vaccination and are associated with protection against subsequent infection

Blood Pressure Increase following COVID-19 Vaccination: A Systematic Overview and Meta-Analysis

AbstractCoronavirus disease 2019 (COVID-19) vaccines proved a strong clinical efficacy against symptomatic or moderate/severe COVID-19 and are considered the most promising approach for curbing the pandemic. However, some questions regarding the safety of COVID-19 vaccines have been recently raised. Among adverse events to vaccines and despite a lack of signal during phase III clinical trials, …

Continue reading Blood Pressure Increase following COVID-19 Vaccination: A Systematic Overview and Meta-Analysis

Paracetamol in the home treatment of early COVID-19 symptoms: A possible foe rather than a friend for elderly patients?

To the Editor,On October 2020, Sestili and Fimognari reported that acetaminophen (N-aetyl-para-aminophenol), commonly known as paracetamol, induces or worsens glutathione (GSH) consumption in elderly patients affected by early or mild coronavirus disease 2019 (COVID-19), thus greatly enhancing the risk of COVID-19 exacerbation in these patients.1 By early COVID-19, we mean the typical or commonly acknowledged …

Continue reading Paracetamol in the home treatment of early COVID-19 symptoms: A possible foe rather than a friend for elderly patients?

Alopecia areata following COVID-19 vaccination: vaccine-induced autoimmunity?

Dear Editor, We report a case of an 80-year-old man who came to our attention for a rapidly progressive loss of facial hair 7 days after the administration of the first dose of the BNT162b2 vaccine, an mRNA vaccine against SARS-CoV-2. He had no personal or family history of alopecia or autoimmunity. Before the vaccination, a …

Continue reading Alopecia areata following COVID-19 vaccination: vaccine-induced autoimmunity?

COVID-19 Vaccine effectiveness against symptomatic infection and hospitalization in Belgium, July 2021-APRIL 2022

The COVID-19 vaccination campaign in Belgium aimed to reduce disease spread and severity. We quantified the observed vaccine effectiveness (VE) against symptomatic infection (VEi) and hospitalization (VEh). Exhaustive data on testing and vaccination was combined with a clinical hospital survey. We estimated VEi using a test negative design and VEh using a proportional hazard analysis. …

Continue reading COVID-19 Vaccine effectiveness against symptomatic infection and hospitalization in Belgium, July 2021-APRIL 2022