Mandavilli, A. (2021, October 12). If You’ve Had Covid, Do You Need the Vaccine? - The New York Times. https://www.nytimes.com/2021/10/12/health/if-youve-had-covid-do-you-need-the-vaccine.html

Dr Daya Sharma 😷🥽💨🧼💉💉. (2021, October 30). Some of the UK JCVI deliberations are deeply disturbing, eg arguing against childhood vax so that they can get infected & boost immunity in adults. Also imply that vax doesn’t have an individual benefit! 🤯 How much of this warped thinking is present in Australia? #COVID19Aus https://t.co/o887d2etcW [Tweet]. @DrDayaSharma. https://twitter.com/DrDayaSharma/status/1454418003429183492

Prof. Gavin Yamey MD MPH. (2021, October 30). “Circulation of COVID-19 in childhood could therefore periodically boost immunity in adults through exposure” When I say childhood vax ALSO benefits adults, folx say “you can’t use benefits to adults in your argument!” JCVI uses benefits to adults of letting kids get infected 👀 [Tweet]. @GYamey. https://twitter.com/GYamey/status/1454433823085715461

Barros-Martins, J., Hammerschmidt, S. I., Cossmann, A., Odak, I., Stankov, M. V., Morillas Ramos, G., Dopfer-Jablonka, A., Heidemann, A., Ritter, C., Friedrichsen, M., Schultze-Florey, C., Ravens, I., Willenzon, S., Bubke, A., Ristenpart, J., Janssen, A., Ssebyatika, G., Bernhardt, G., Münch, J., … Behrens, G. M. N. (2021). Immune responses against SARS-CoV-2 variants after heterologous and homologous ChAdOx1 nCoV-19/BNT162b2 vaccination. Nature Medicine, 1–5. https://doi.org/10.1038/s41591-021-01449-9

Griffin, S. (2021). Covid-19: Millions could be offered booster vaccinations from September. BMJ, 374, n1686. https://doi.org/10.1136/bmj.n1686

Beautiful introduction about STL & Boost.

another great description of the phenomenon

json文件读取时要注意这点，json中数据类型并不重要

使用shared_ptr的第一原则

链表就有可能出现循环引用的问题