ABSTRACT Background Coronavirus disease 2019 (COVID-19) case numbers have
increased following the emergence of the Omicron variant. This study estimated the impact …

Background Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) causing
COVID-19 has continuously evolved, requiring the development of adapted vaccines. This …

The Thai government implemented COVID-19 booster vaccines to prevent morbidity and
mortality during the spreading of the Omicron variant. However, little is known about which …

Background We aimed to estimate the public health impact of booster vaccination against
COVID-19 in the UK during an Omicron-predominant period. Research design and methods …

Real-world data on the effectiveness of COVID-19 vaccines against the Omicron variant (B.
1.1. 529) is limited. This systematic review aimed to investigate the real-world effectiveness …

Background The COVID-19 pandemic has evolved quickly, with different variants of concern
resulting in the need to offer continued protection through booster vaccinations. The duration …

Thailand is among many countries severely affected by COVID-19 since the beginning of the
global pandemic. Thus, a deliberate planning of health care resource allocation against …

Objective To investigate the real-world effectiveness of COVID-19 vaccine boosters during
China's Omicron wave. Methods In January 2023, we surveyed Shenzhen, China residents …

Background Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) causing
COVID-19 has been a dynamically changing virus, requiring the development of adapted …

(1) Background: The assessment of vaccine effectiveness against the Omicron variant is vital
in the fight against COVID-19, but research on booster vaccine efficacy using nationwide …