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

Pandemic influenza A (H1N1) 2009 (pandemic H1N1) is spreading throughout the planet. It
has become the dominant strain in the Southern Hemisphere, where the influenza season …

A central conundrum in the study of infectious disease dynamics is to define the landscape
of population immunity. The proportion of individuals protected against a specific pathogen …

Accurate serologic tests to detect host antibodies to severe acute respiratory syndrome–related
coronavirus 2 (SARS-CoV-2) will be critical for the public health response to the …

Vaccinating school-aged children against influenza can reduce age-specific and population-level
illness attack rates. Using a stochastic simulation model of influenza transmission, the …

Background Declining vaccination coverage and increasing hesitancy is a worldwide concern.
Many countries have implemented mandatory vaccination policies to promote vaccination…

Background: This study aimed to determine if people living in communities with higher socio-economic
deprivation are at an increased risk of cognitive and functional impairment even …

Background Bacterial meningitis, which is caused mainly by Neisseria meningitidis,
Haemophilus influenzae, and Streptococcus pneumoniae, inflicts a substantial burden of disease …

Background In December 2013, a multicomponent meningococcal serogroup B (4CMenB)
vaccine was used before licensure on the basis of special consideration by the Food and …

Background Vaccine uptake rates have been historically low in correctional settings. To better
understand vaccine hesitancy in these high-risk settings, we explored reasons for COVID-…