Add link for social distancing guidelines
@@ -178,7 +178,7 @@ This strongly suggests that there is ongoing local transmission within Californi
# What you can do
Social distancing -- that is, decreasing the number of people you encounter each day -- can be challenging, but is hugely beneficial to the public good.
- If everyone decreased their daily contacts by 25%, we would expect to see a 50% decrease in the cumulative number of cases over the next month ([Klein et al., 2020-03-13](https://institutefordiseasemodeling.github.io/COVID-public/reports/Working%20paper%20%E2%80%93%20model-based%20estimates%20of%20COVID-19%20burden%20in%20King%20and%20Snohomish%20counties%20through%20April%207.pdf)).
+ If everyone decreased their daily contacts by 25%, we would expect to see a 50% decrease in the cumulative number of cases over the next month ([Klein et al., 2020-03-13](https://institutefordiseasemodeling.github.io/COVID-public/reports/Working%20paper%20%E2%80%93%20model-based%20estimates%20of%20COVID-19%20burden%20in%20King%20and%20Snohomish%20counties%20through%20April%207.pdf)). Not sure what that means? [Check out this helpful guide](https://www.theatlantic.com/family/archive/2020/03/coronavirus-what-does-social-distancing-mean/607927/).
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<img src="https://github.com/nextstrain/ncov/raw/master/figures/social-distancing-efficacy.png" width="70%">
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