SARS-CoV-2 variants of concern (VOC) are more transmissible and may have the potential
for increased disease severity and decreased vaccine effectiveness. We estimated the …

ContextAdherence to antiretroviral therapy is a powerful predictor of survival for individuals
living with human immunodeficiency virus (HIV) and AIDS. Concerns about incomplete …

Background Adherence to highly active antiretroviral therapy (HAART) medication is the
greatest patient-enabled predictor of treatment success and mortality for those who have access …

Importance The incidence of SARS-CoV-2 infection, including among individuals who have
received 2 doses of COVID-19 vaccine, increased substantially following the emergence of …

Objective To estimate the effectiveness of mRNA covid-19 vaccines against symptomatic
infection and severe outcomes (hospital admission or death). Design Test negative design …

Methods. On February 20, 2007, we searched YouTube (www. youtube. com) using the
keywords vaccination and immunization. We included all unique videos with Englishlanguage …

Objective To determine the effect of smoking cessation on mortality after myocardial infarction.
Data Sources English- and non–English-language articles published from 1966 through …

Background Enrolling participants onto clinical trials of cancer presents an important
challenge. We aimed to identify the concerns of patients with cancer about, and the barriers to, …

OBJECTIVE: To determine whether a systematic review of qualitative studies can lead to
identification of consistent themes across studies, using barriers toward childhood vaccination …

Background Smoking remains the leading preventable cause of premature deaths. Several
pharmacological interventions now exist to aid smokers in cessation. These include Nicotine …