McQuinn, C. (n.d.). Schools and childcare services to get up to €72m for ventilation. The Irish Times. Retrieved December 13, 2021, from https://www.irishtimes.com/news/health/schools-and-childcare-services-to-get-up-to-72m-for-ventilation-1.4753597

Greenhalgh, Trisha, Jose L. Jimenez, Kimberly A. Prather, Zeynep Tufekci, David Fisman, and Robert Schooley. ‘Ten Scientific Reasons in Support of Airborne Transmission of SARS-CoV-2’. The Lancet 0, no. 0 (15 April 2021). https://doi.org/10.1016/S0140-6736(21)00869-2.

CNN, L. M. (n.d.). CDC says masks protect wearers from Covid-19. CNN. Retrieved 1 March 2021, from https://www.cnn.com/2020/11/10/health/masks-cdc-updated-guidance/index.html

“Still Using a Cloth Mask? Upgrade to an N95 or P100!” Accessed February 28, 2021. https://www.microcovid.org/blog/masks.

$$\left\{\mathcal{I}_{n}, n \geq 0\right\}$$

是一组滤链

• 滤链定义在$$(\Omega, \mathscr{F}, \mathscr{P})$$

• 滤链满足$$\mathcal{I}{0} \subseteq \mathcal{I}{1} \subseteq \mathcal{I}_{2} \subseteq \cdots$$

Ventilator Allocation for Covid-19, Mask Sterilization, HIV Life Expectancy, and more #JNOLive. (2020, June 23). https://www.youtube.com/watch?v=3htA-tav11M&feature=emb_logo