In this issue:
SARS-CoV-2 test sensitivity and duration of positivity
Effectiveness of four major COVID-19 vaccines
Vaccine-induced vs natural vs hybrid immunity to SARS-CoV-2
Mask effectiveness during pandemics caused by respiratory pathogens
Control of epidemic-prone acute respiratory infections in healthcare settings
Strategies to reduce transmission of airborne respiratory pathogens
Non-pharmaceutical interventions in daycare to reduce acute respiratory infections
Association between housing status and COVID-19 outcomes
Global prevalence of long COVID and its most common symptoms
Long COVID – clinical evaluation, research and impact on society
Cost-effectiveness of oral antiviral treatment for high-risk adults with COVID-19
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