a benefit was observed only in the participants with negative status, among whom the adjusted risk difference was −5.1 percentage points (95% confidence interval [CI], −8.8 to −1.6); the adjusted risk difference among
We used a test-negative, case–control study design to estimate vaccine effectiveness, applying the same methods used recently to assess waning effectiveness of the BNT162b2 (Pfizer–BioNTech) vaccine in the same population.3Case par...
methodalone,13andtheuseofbothshouldbe Beforetreatmentmendationscanbemadefor stronglyconsideredaspartofthepreoperativeeval- agivenpatient,thesizeofthetumor,lymph-node uation.Thegoldstandardformediastinalevalua- status,andpossiblepresenceofmetastasesmustbe tionislymph-nodebiopsybymeansofbronchosco- ascertained.Lung...
To the Editor: In early November 2021, the B.1.1.529 (omicron) variant was first identified in South Africa and has rapidly become the dominant variant in Gauteng province, where a third wave of coronavirus disease 2019 (Covid-19) driven...
5and had not had infection with SARS-CoV-2 and in 8 persons with a history of SARS-CoV-2 infection, irrespective of vaccination status. Demographic and clinical characteristics of the study population are provided in Tables S1...