Persistence of spike-specific immune responses in BNT162b2-vaccinated donors and generation of rapid T cells expansion protocol for adoptive immunotherapy: A pilot study.

Introduction: The BNT162b2 mRNA-based vaccine has shown high efficacy in preventing COVID-19 infection but there are limited data on the types and persistence of the humoral and T cell responses to such a vaccine.

Methods: Here, we dissect the vaccine-induced humoral and cellular responses in a cohort of six healthy recipients of two doses of this vaccine.

Results And Discussion: Overall, there was heterogeneity in the spike-specific humoral and cellular responses among vaccinated individuals.

Environmental surface contamination with SARS-CoV-2 in professional football clubs.

: We assessed SARS-CoV-2 contamination of random surfaces in football training facilities in an environment with a high prevalence of infections.: In six clubs of the Qatar Stars League, surfaces of random locations (high-touch areas, ventilation systems, toilets, cleaning tools, freezers, pantries) in routinely cleaned training facilities, locker rooms, medical and administrative areas were swabbed for SARS-CoV-2. The swabs were screened for the presence of viral RNA using a SARS-CoV-2 qPCR Probe Assay.

COVID-19 infection among healthcare workers in a national healthcare system: The Qatar experience.

Background: Our aim was to determine the prevalence of COVID-19 infection in healthcare workers (HCWs) in a national healthcare system and to understand the risk factors for infection.

Methods: The study was conducted at Hamad Medical Corporation (HMC) in Qatar, a national healthcare system with 14 hospitals and >28,000 employees, between March 10 and June 24, 2020. Data on COVID-19+ HCWs were retrieved from the electronic health records and employment records, followed by an email survey and a focused telephone interview.