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cmrivers

472 karma · joined April 29, 2013

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cmrivers··on Leaked documents: Ugandan government expects explosion in Ebola cases
Update, this comment refers to the original blog post submission, which pulled out forecasted numbers with no context. The Telegraph article is better.
cmrivers··on Leaked documents: Ugandan government expects explosion in Ebola cases
Then it's a scenario model, which asks what-if questions usually for planning purposes (e.g., what's the most hospital beds we might need?). Scenario models can have longer time horizons than forecasts, but 6 months is still quite long.
cmrivers··on Leaked documents: Ugandan government expects explosion in Ebola cases
The outbreak in Uganda is troubling, but a forecast that goes out 6+ months is silly. No professional infectious disease modeler will forecast out more than a few weeks because the trajectory of the outbreak changes in response to interventions and behaviors.
cmrivers··on The Tragedy of Baltimore
All city high schools are assigned by choice/match. I think with middle schools it varies. https://www.baltimorecityschools.org/high-school-choice
cmrivers··on The Tragedy of Baltimore
I live in Baltimore City and have to agree that it's troubled. Another thing that makes it difficult for the city to thrive is the abysmal schools. Middle schools and high schools are not assigned by neighborhood, but instead by a match system. In theory this offers opportunities for children in low-income neighborhoods that would otherwise have a too-small tax base for their local schools. In practice, it means nearly all city schools are horrible. "One-third of Baltimore High Schools in 2016 had zero students proficient in math. [0]" and "In fourth- and eighth-grade reading, only 13 percent of city students are considered proficient or advanced. In fourth-grade math, 14 percent were proficient and in eighth-grade math 11 percent met the mark. [1]"

Even living in the nicer, lower-crime neighborhoods isn't enough for families if the school options are untenable.

[0] https://www.baltimoresun.com/news/opinion/readersrespond/bs-...

[1] https://www.baltimoresun.com/news/maryland/education/k-12/bs...

cmrivers··on Fears of Larger Contagion as Ebola Spreads to Major Congo City
For what it's worth, I maintain a data repository for this outbreak (https://github.com/cmrivers/ebola_drc) and the 2014-2015 outbreak in West Africa (https://github.com/cmrivers/ebola).
cmrivers··on Is Captain America a Biological Weapon?
My guess is that human enhancement for military use will be subject to international negotiations in the coming decades, but will probably not be considered under the Biological Weapons Convention.

For further reading, the Atlantic published an article a few years ago on this topic: https://www.theatlantic.com/technology/archive/2013/01/could...

cmrivers··on Our broken peer review system, in one saga
This is a risky strategy - your paper can end up back in the hands of the same reviewers from round one.
cmrivers··on Join the U.S. Digital Service
That's very close to what the SMART program is. I'm a SMART scholar (PhD level), it's been a good experience so far. http://smart.asee.org/
cmrivers··on [dead]
Here is an alternate link on usaid.gov: http://www.usaid.gov/grandchallenges/
cmrivers··on [dead]
I think this challenge has the potential to be useful. We launched a similar effort last week geared more as a hackathon [0], and we have some really interesting projects in the works. Even just simple visualization and analysis of the data hasn't really been done yet, but there are a lot of insights that can be pulled out [1, 2]. Similar civic hacking projects were launched during Hurricane Sandy, and some useful things came out of it [3].

This outbreak really is one of the greatest public health disasters of modern times. I encourage you to think about how you might help, beyond donating money.

[0] https://www.hackerleague.org/hackathons/computing-for-ebola-...

[1] Data available for download: https://github.com/cmrivers/ebola

[2] Examples of ebola analyses: http://www.caitlinrivers.com/blog/category/ebola

[3] https://civic.mit.edu/blog/hidenise/hurricanehackers-project...

cmrivers··on Ebola Cases Could Reach 1.4M in 4 Months, C.D.C. Estimates
My suggestion is just based on the findings reported in the NEJM paper I linked, which has an incubation of 11 days and a long infectious period.
cmrivers··on Ebola Cases Could Reach 1.4M in 4 Months, C.D.C. Estimates
The 'tool' used to generate these results is available for download as an excel spreadsheet here: http://stacks.cdc.gov/view/cdc/24900.

Today parameter estimates were published in the NEJM [0] that conflict with the model's default settings. The Eichner incubation distribution, and an infectious duration of maybe 11 days are better inputs, in my opinion.

[0] http://www.nejm.org/doi/full/10.1056/NEJMoa1411100?query=fea...

cmrivers··on [dead]
The WHO is now reporting on Twitter that the species in DRC is not the same as the one causing the West Africa outbreak [0]. In other words, this is a separate emergence event. [0] https://twitter.com/WHO/status/503673397990395904
cmrivers··on How plagues really work
But why have we never seen an outbreak in a city before? It's not just good luck. We've had (at least) seven imported cases of Lassa hemorrhagic fever in the US [0], and at least one imported case of Marburg [1]. Both have a similar clinical presentation and epidemiology as Ebola, and both resulted in no secondary transmission inside the US.

SARS was estimated to have a similar basic reproduction number as Ebola (~2), and it was successfully contained globally.

[0] http://www.cdc.gov/media/releases/2014/p0404-lassa-fever.htm... [1] http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5849a2.htm

cmrivers··on How plagues really work
I agree wholeheartedly with your last sentence - stopping transmission in West Africa and improving health systems is key.

I don't agree with your other points though. Ebola patients are only infectious while symptomatic, so accidentally bumping into someone on the subway is not the kind of direct contact needed for transmission. And although the virus can be present in sweat, it's mostly blood, fecal matter, etc. that transmit.

If there were a case introduced in the United States, it's not entirely out of the question that there would be a secondary case or two. Not probable, but not impossible, either. However, I truly believe there would be no more than one secondary generation (two at the absolute max). Western countries can mobilize effective isolation, quarantine, and contact tracing in ways that overburdened West African countries cannot.

cmrivers··on Tracing Ebola’s Breakout to an African 2-Year-Old
You're right, I revisited the article that gave me that impression [0], and it's very clear that staffing is the resource that is exhausted. Nonetheless, it's an excellent organization and a worthy cause in my opinion.

[0] http://www.msf.org.uk/article/ebola-official-msf-response-wh...

cmrivers··on Tracing Ebola’s Breakout to an African 2-Year-Old
Medecins Sans Frontiers (Doctors Without Borders) is an excellent choice. They have been integral to controlling several past Ebola outbreaks, and have been fighting this one since the beginning. They are almost entirely tapped out right now. http://www.msf.org

I can't vouch for them, but the Liberian Ministry of Health also has donation instructions: http://www.mohsw.gov.lr

cmrivers··on One unvaccinated child was patient zero of a measles outbreak
The measles vaccine is live attenuated, so in the rare case it does cause disease, it's less severe than wild type.

Measles is one of the most infectious diseases known to man. In a fully susceptible population, one infected person can expect to infect 14 other people. The reason only "the few hundred people" get infected annually now is because of widespread vaccination campaigns.

Measles used to be all but inevitable, infecting literally millions, and killing hundreds each year in the US. The only reason we have come to fear vaccines is because we as a society no longer remember fearing these diseases.

http://www.cdc.gov/measles/vaccination.html

cmrivers··on How Baby Boomers screwed their kids
If I ever read another long, rambling screed about the failings of millennials, it will be too soon.
cmrivers··on Ask HN: MS Word alternatives for writing academic reports
I'm also an academic. I use Scrivener, then pop it into LaTeX. Scrivener has a non-commercial version for Linux. It's not fully featured, but it still does a good job. You have to download it from their forum: http://www.literatureandlatte.com/forum/viewforum.php?f=33&s...

Learning LaTeX is absolutely worth the time and effort. I realize it's not the easiest thing to learn, but it's invaluable for keeping track of citations, simple typesetting, and rendering equations. It is not, however, worth using for making slideshows or posters.