Learning about how COVID-19 spreads and the factors that can increase or decrease that risk can help you make informed choices.

The questions below are written in past tense to help you assess the likelihood that you were infected when you were around a person with COVID-19. If multiple factors below indicate higher transmission risk, you should follow the steps for what to do if you are exposed.

You can also ask yourself the same questions, but about future interactions with others, to help you decide what prevention actions to take. If multiple factors below indicate higher transmission risk, you should consider adding more prevention actions.

Pfizer-BioNTech

Pfizer-BioNTech COVID-19 vaccines are authorized or approved for:

6 months–4 years old: 3-dose primary series 5–17 years old: 2-dose primary series Moderna

Moderna COVID-19 vaccines are authorized for:

6 months–17 years old: 2-dose primary series J&J/Janssen

J&J/Janssen COVID-19 vaccines are NOT authorized for children and teens 17 years and under

First published here.

Resilience is a “new” term creeping into military directives, but what does it mean and how do we use it to guide decisions? In the previous resilience corner, we discussed how resilience should be differentiated from established notions of risk as the two concepts are fundamentally different. Resilience is more like a verb than a noun, and resilient military systems should be designed to handle any possible problem instead of only pre-defined threat scenarios. But how do we start approaching this problem of resilient design when we cannot define specific threats?

In a recent article published in the journal Risk Analysis, we answered this question by relying on military theories of surprise (Eisenberg et al. 2019).

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