1. Life expectancy changes since COVID-19;Schöley;Nat. Human Behav.,2022
2. Safety and efficacy of COVID-19 vaccines in children and adolescents: a systematic review of randomized controlled trials;Tian;J. Med. Virol.,2022
3. WHO. Coronavirus disease COVID-19. https://www.who.int/emergencies/diseases/novel-coronavirus-2019. Accessed January 12, 2023..
4. COVID-19: how Omicron overtook Delta in three charts;Mallapaty;Nature,2022
5. Immune boosting by B.1.1.529 (Omicron) depends on previous SARS-CoV-2 exposure;Reynolds;Science,2022