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+** Main links, portals, etc.:
+
+* Wikipedia articles [on the
+  outbreak](https://en.wikipedia.org/wiki/2019%E2%80%9320_coronavirus_outbreak),
+  [on the
+  virus](https://en.wikipedia.org/wiki/Severe_acute_respiratory_syndrome_coronavirus_2)
+  and [on the disease it
+  causes](https://en.wikipedia.org/wiki/Coronavirus_disease_2019).
+
+* [Daily situation
+  reports](https://www.who.int/emergencies/diseases/novel-coronavirus-2019/situation-reports/)
+  and [general
+  updates](https://www.who.int/emergencies/diseases/novel-coronavirus-2019)
+  by the WHO.
+
+* [Covid-19 global cases situation dashboard by John
+  Hopkins](https://gisanddata.maps.arcgis.com/apps/opsdashboard/index.html#/bda7594740fd40299423467b48e9ecf6),
+  updated permanently ([historical
+  data](https://github.com/CSSEGISandData/COVID-19)).
+
+* [Epidemic data by Wolfram
+  Data](https://www.wolframcloud.com/obj/examples/COVID19China).
+
+* [Phylogenetic tree of 2019-nCoV
+  strains](https://nextstrain.org/ncov) ([data
+  source](https://github.com/nextstrain/ncov)).
+
+* [Virus pathogen data portal on
+  2019-nCoV](https://www.viprbrc.org/brc/home.spg?decorator=corona_ncov).
+
+** Topical or time-specific links:
+
+* [Twitter Q&A
+  thread](https://twitter.com/MackayIM/status/1233509962292375559) by
+  virologist [Ian M. Mackay](https://virologydownunder.com/) on
+  2020-02-28; discusses, inter alia, reinfection
+  ([here](https://twitter.com/MackayIM/status/1233512522168356864),
+  [here](https://twitter.com/MackayIM/status/1233512323358363654) and
+  [here](https://twitter.com/MackayIM/status/1233511497017561090);
+  seems to think false recovery is more likely than reinfection),
+  [attack
+  rate](https://twitter.com/MackayIM/status/1233511899083530240)
+  (thinks 70% is probably overestimated), [virus
+  lifetime](https://twitter.com/MackayIM/status/1233522944137187329),
+  [fatality rate in
+  Italy](https://twitter.com/MackayIM/status/1233521001578803200)
+  (probably seems high because of observation bias) and more.
+
+* [A discussion of seasonality of SARS-CoV-2 by epidemiologist Marc
+  Lipsitch](https://docs.google.com/document/d/17mWPx-HTE1F2RKkbJlt4VkSYaznUiJgt21nuvmu51Kc)
+  \[date≤2020-02-26\]; summary: despite seasonality of related
+  viruses, it probably won't go away on its own in the summer.
+
+* [A primer for the general public on virus
+  mutation](https://ccdd.hsph.harvard.edu/mutation-adaptation-and-virus-genomes-a-primer-for-the-public/)
+  \[date≤2020-02-26\]; main message is that we don't know much about
+  mutations of this particular virus, but mutations aren't
+  particularly scary in and of themselves.
+
+* [Interview of Éric Caumes (head of the department of infectious
+  diseases at the Pitié hospital in
+  Paris)](https://www.jim.fr/e-docs/covid_19_la_riposte_est_elle_plus_redoutable_que_le_virus__181852/document_jim_tube.phtml)
+  on 2020-02-25 \[in French\], discussing various issues
+  (contagiousness, attack rate, fatality rate, mutation rate, etc.);
+  main message seems to be that we are overreacting.
+
+* [Thread by epidemiologist Marc
+  Lipsitch](https://threadreaderapp.com/thread/1231425805898657795.html)
+  on 2020-02-23 ([Twitter
+  link](https://twitter.com/mlipsitch/status/1231425805898657795)),
+  discussing the possibility and effectiveness of (temporary vs
+  long-term) countermeasures (case-based containment vs lockdowns,
+  etc.); expresses skepticism as to effectiveness of Chinese lockdowns
+  (and reliability of reported figures).
+
+* [What we have learnt as of 2020-02-20, MOOC by epidemiologist Arnaud
+  Fontanet for the Institut
+  Pasteur](https://www.youtube.com/watch?v=4l_NxT9XJHk); summarizes
+  main information as of this date.  *\[TODO: write better summary
+  here.\]*
+
+* [Thread by epidemiologist Marc
+  Lipsitch](https://threadreaderapp.com/thread/1228373884027592704.html)
+  on 2020-02-14 ([Twitter
+  link](https://twitter.com/mlipsitch/status/1228373884027592704)),
+  discussing attack rate (=cumulated infection rate) r and the
+  estimation that 40%≲r≲70% “in a situation without effective
+  controls” based on comparison with similar epidemics.
+
+* [Epidemiological characteristics report published in *China CDC
+  Weekly*](http://weekly.chinacdc.cn/fileCCDCW/journal/article/ccdcw/newcreate/COVID-19.pdf)
+  \[[mirror](https://github.com/cmrivers/ncov/blob/master/COVID-19.pdf)\]
+  detailing breakdown of cases and statistics up to 2020-02-11 (72 314
+  cases).