The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic has raised
many questions about the management of patients with chronic obstructive pulmonary …

Smoking is relevant to infectious diseases resulting in increased prevalence and mortality. In
this article, we aim to provide an overview of the effects of smoking in various infections and …

Background The coronavirus disease 2019 (COVID‐19) has become a global pandemic,
with 10%‐20% of severe cases and over 508 000 deaths worldwide. Objective This study …

The correlation between SARS-CoV-2 and oral manifestations is still controversial. The aim
of this observational study was to determine the oral manifestation of the hospitalized …

Although it is well established that cigarette smoking is associated with morbidity and
mortality in several respiratory infections, data from recent studies suggest that active …

The coronavirus disease 2019 (COVID-19) pandemic, an infection caused by the severe
acute respiratory syndrome coronavirus (SARS-CoV-2), has led to more than 771,000 …

Objective: To assess changes in daily habits, food choices and lifestyle of adult Brazilians
before and during the COVID-19 pandemic. Design: This observational study was carried …

The association between current smoking and coronavirus disease 2019 (COVID-19)
progression remains uncertain. We aim to provide up-to-date evidence of the role of …

We conducted a prospective population-based cohort study to assess risk factors for
infection, hospitalization, and death from SARS-CoV-2. The study comprised the people …

METHODS A nationwide survey of a representative sample of 4075 UK respondents aged>
16 years was conducted between 27 April and 24 May 2020 during the COVID-19 …