c03e3225559110595d05d71774331201c15d914a
kate
  Wed Feb 24 08:27:27 2021 -0800
Update and tighten wording in intro, update Nextstrain link. refs #25217

diff --git src/hg/htdocs/covid19.html src/hg/htdocs/covid19.html
index 8826c63..250d543 100755
--- src/hg/htdocs/covid19.html
+++ src/hg/htdocs/covid19.html
@@ -12,76 +12,71 @@
     <div class="col-md-6">
 <p>
 The SARS-CoV-2 coronavirus emerged in December 2019 as a novel human pathogen causing
 a severe acute respiratory syndrome (COVID-19). The disease
 spread rapidly worldwide and was
 <A TARGET="_BLANK" 
     HREF="https://www.who.int/dg/speeches/detail/who-director-general-s-opening-remarks-at-the-media-briefing-on-covid-19---11-march-2020">
 declared a pandemic by the World Health Organization</a>
 on March 11, 2020.
 </p>
 <p>
 Genome sequencing of thousands of viral samples has helped researchers study mechanisms of 
 infection, transmission and response of the human immune system. 
 We at the
 <a target="_blank" href="https://ucscgenomics.soe.ucsc.edu/">UC Santa Cruz Genomics Institute</a>
-are responding to the urgency of supporting biomedical research aimed at 
-developing treatments and a vaccine for this devastating illness by fast-tracking 
-visualization of genome sequences and analyses in the
+are responding to the urgency of biomedical research to develop treaments and vaccines for this
+devastating illness by fast-tracking visualization of genome sequences and analyses in the
 <a target="_blank" href="/cgi-bin/hgGateway?db=wuhCor1">UCSC Genome Browser for SARS-Cov-2</a>.
-Moreover, we are incorporating relevant biomedical datasets such as single-cell lung gene 
+We are also incorporating relevant biomedical datasets such as single-cell lung gene 
 expression into the 
-<a target="_blank" href="/singlecell.html">UCSC Cell Browser</a>, and are creating data tracks
+<a target="_blank" href="/singlecell.html">UCSC Cell Browser</a>, and creating data tracks
 of
-<a target="_blank" href="#covidHgiGwas">COVID-19 annotations in our Human Genome Browsers</a>
-as datasets become publicly available.  These annotations can further understanding of the
+<a target="_blank" href="#covidHgiGwas">COVID-19 annotations in our Human Genome Browsers</a>.
+These annotations can further understanding of the
 human genetic determinants of infection susceptibility, disease severity, and outcomes. 
 </p>
 <p>
 Since the beginning of SARS-CoV-2 circulation in humans, the viral genome has been accummulating
-mutations.  Compared to other RNA viruses its mutation rate is low, but enough variants are known 
-to determine how samples cluster into groups and how they are related (see COVID-19 transmission map).
-Mutations identified as important medically and epidemiologically are displayed in SARS-Cov-2 browser 
+mutations.  
+Mutations identified as important medically and epidemiologically are displayed in SARS-Cov-2 
+browser 
 tracks 
 <a target="_blank" href="/cgi-bin/hgTrackUi?db=wuhCor1&g=variantMuts">Variants of Concern</a> and
 <a target="_blank" href="/cgi-bin/hgTrackUi?db=wuhCor1&g=spikeMuts">Spike Mutations</a>.
 Investigations of antibody resistance of viral mutations are available in the 
-<a target="_blank" href="/cgi-bin/hgTrackUi?db=wuhCor1&g=abEscape">Antibody Escape</a> track collection.
-The B.1.1.7 variant of the virus, first identified in the UK and characterized as more infectious, 
-was first confirmed in the US in late December 2020.
-The
-<a target="_blank" href="/cgi-bin/hgTrackUi?db=wuhCor1&g=lineageB_1_1_7_US">B.1.1.7 in USA</a> track
-provides a phylogenetic view of the first sequences from the US, and links to view phylogenetic analysis of
-the subsequently identified geographic clusters (in New York, California, Colorado and Florida).
+<a target="_blank" href="/cgi-bin/hgTrackUi?db=wuhCor1&g=abEscape">Antibody Escape</a> track 
+collection.
 </p>
 <p>
 A manuscript describing 
 <a href="https://www.nature.com/articles/s41588-020-0700-8" target="_blank">
-The UCSC SARS-CoV-2 Genome Browser</a>, was published in the September 9 issue of <em>Nature Genetics</em>.
+The UCSC SARS-CoV-2 Genome Browser</a>, was published in the September 9, 2020 issue of 
+<em>Nature Genetics</em>.
 </p>
     </div>
 
     <div class="col-md-6">
         <img class="text-center" alt="COVID-19 transmission as of May 30, 2020, from Nextstrain" 
             src="/images/covid19/covid19-transmission.may30_2020.nextstrain.png"
                 style="margin-bottom: 5px !important">
                     <div style="text-align: right; line-height: 1">
                         <font SIZE=-1><em>COVID-19 transmission as of May 30, 2020</em><BR>
                         </font>
                         <font SIZE=-2>
-                          <A HREF="https://nextstrain.org"
-                          TARGET=_blank>Latest situation report from Nextstrain.org</a>
+                          <A HREF="https://nextstrain.org/ncov/global"
+                          TARGET=_blank>Latest global analysis from Nextstrain.org</a>
                         </font>
                     </div>
     </div>
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