COVID variant EG.5: What we know about 'Eris'

Deutsche Welle

<div class="embed-wrap"><figure data-feedback="fb:likes,fb:comments"><img alt="Credit: NIAID" src="https://sa.kapamilya.com/absnews/abscbnnews/media/2023/life/08/16/20230816-covid-variant-eg-5-niaid.jpg"/><figcaption>Colorized scanning electron micrograph of a cell (red) infected with the Omicron strain of SARS-CoV-2 virus particles (blue), isolated from a patient sample. Image captured at the NIAID Integrated Research Facility (IRF) in Fort Detrick, Maryland. <em>Credit: NIAID</em></figcaption></figure></div><p>After more than three years of the COVID-19 pandemic, the World Health Organization ended the global public health emergency on May 5, 2023.</p><ul class="op-related-articles">	<li><a href="https://news.abs-cbn.com/news/05/05/23/covid-no-longer-a-global-health-emergency-who">COVID no longer a global health emergency: WHO</a></li></ul><p>But at the same time, WHO Director-General, Tedros Adhanom Ghebreyesus noted that SARS-CoV-2, the virus that leads to COVID, had not been fully defeated, that it continued to circulate in the world and that we could still see the emergence of new and more dangerous variants.</p><p>And that&#x27;s where we are now: there is a new COVID variant: EG.5, also known as Eris. We just don&#x27;t know whether it&#x27;s more dangerous than previous variants yet.</p><ul class="op-related-articles">	<li><a href="https://news.abs-cbn.com/overseas/08/10/23/who-identifies-new-coronavirus-variant-of-interest">WHO identifies new coronavirus &#x27;variant of interest&#x27;</a></li>	<li><a href="https://news.abs-cbn.com/news/08/14/23/who-reports-rising-global-covid-cases">WHO reports rising global COVID cases</a></li>	<li><a href="https://news.abs-cbn.com/news/06/27/23/who-warns-covid-has-not-gone-away">WHO warns COVID &#x27;has not gone away&#x27;</a></li></ul><p>The WHO has classified the EG.5 as a Variant of Interest (VOI). At time of writing, it is not a Variant of Concern (VOC), which is one step worse that a Variant of Interest.</p><p>Variants of Concern are those whose characteristics have a significant influence on the spread of the virus — because of higher rates of contagion and rising infection rates, or an increase in severe cases of the illness and COVID mortality rates.</p><ul class="op-related-articles">	<li><a href="https://news.abs-cbn.com/spotlight/07/20/23/first-genetic-clue-why-some-people-do-not-get-sick-from-covid">First genetic clue why some people do not get sick from COVID</a></li></ul><p>EG.5 is one of three variants on the WHO&#x27;s watchlist. The other two are XBB.1.5, which is largely circulating in Europe and the Americas, and XBB.1.16, which is predominant in Asia.</p><ul class="op-related-articles">	<li><a href="https://news.abs-cbn.com/news/05/25/23/omicron-subvariant-arcturus-cases-rise-to-28-doh">Omicron subvariant Arcturus cases rise to 28 - DOH</a></li></ul><div><strong>Eris is just a nickname for EG.5</strong></div><p>T. Ryan Gregory, an Canadian evolutionary biologist based at the University of Guelph, Ontario, has studied the subtype EG.5.1 (Ed.: note the added &quot;.1&quot; which indicates this is the first version of EG.5) and posted a comment on its nickname, Eris, suggesting that the nickname may lead to some confusion as we talk more and more about the variant.</p><p>Eris is also the name of one of the largest dwarf planets in our solar system — Eris is the Greek goddess of chaos. But, notes Gregory, the nickname is unlikely to cause a big wave in itself.</p><p>The WHO classified EG.5 as a VOI due to rising infection rates attributed to the variant, the fact that it spreads fast and its ability of so-called &quot;immune escape&quot;.</p><p>EG.5 is a descendent lineage of XBB. 1.9.2. It has an additional spike mutation that may explain why it can escape the human immune system&#x27;s response.</p><p>That&#x27;s according to the Neherlab research group, based at the Biozentrum, University of Basel, Switzerland. In a Neherlab variant report posted at the end of June 2023, EG.5 was already described as the &quot;fastest growing lineage with significant circulation&quot; in the world.</p><p>The report said that EG.5 &quot;might also be a slightly beneficial mutation.&quot;</p><figure class="op-interactive"><iframe allow="autoplay; fullscreen" frameBorder="0" height="100%" id="ivsplayer01" scrolling="no" src="https://player.ivideosmart.com/ivsplayer/v4/dist/html/iframe-src.html?iframeid=ivsplayer01&amp;key=e8c22c015ca9eafa76f1e3edfa03c603&amp;spid=3001339&amp;vid=2742241" width="100%"></iframe></figure><div class="iwantbar">Watch more News on <a href="https://www.iwanttfc.com/#!/browse/Genres/News/tag_id_genres/id_news" target="_blank">iWantTFC</a></div><p>Neherlab&#x27;s data suggests that EG.5 was first detected in February 2023 in Indonesia and the following month in the USA.</p><p>EG.5 was also on the agenda of a virtual press conference hosted by the WHO on July 27, 2023. During the briefing, Maria Van Kerkhove, the WHO&#x27;s Technical Lead for COVID-19, said &quot;all of the variants that we are detecting that are sublineages of Omicron have an increased growth rate.&quot;</p><p>That, said Van Kerkhove, &quot;raises the point that this virus continues to circulate and it continues to change.&quot;</p><p>In its EG.5 Initial Risk Evaluation report (August 7, 2023), the WHO said the variant had been sequenced more than 7,350 times, with samples from 51 countries.</p><p>Most of the variant sequences were from China, with 30.6%, or 2247 sequences. Other countries listed with at least 100 sequences included the USA, South Korea, Japan, Canada, Australia, Singapore, the UK, France, Portugal and Spain.</p><div><strong>Why we still have to &#x27;keep an eye&#x27; on COVID</strong></div><p>At the end of July, Van Kerkhoven said &quot;[w]e aren&#x27;t seeing the same level of impact in terms of hospitalizations and deaths because people are protected largely from vaccination but also from past infection, so we have some immunity that has been built up.&quot;</p><p>But Van Kerkhove says there is a concern that &quot;we could potentially see new variants that could be more severe and that&#x27;s something we have to keep an eye out for […].&quot;</p><p>As a result, warned the epidemiologists, it&#x27;s important that nations continue to report COVID-related mortality rates, hospitalizations, cases requiring intensive. But in July, only a quarter of all nations provided the WHO with death rates, and only 11% of nations provided data on severe cases.</p><p>Continuing sequencing is also vital, said Van Kerkhove: &quot;make no mistake, the virus has not gone away.&quot;</p><p>It is, however, as yet unclear whether EG.5 caused the most recent rise in COVID cases. US-based physician and scientist Eric Topol said in a post that while it was important to &quot;track the evolution&quot; of the virus, there was &quot;no clear [cause] and effect relationship with the current (small) increases in wastewater, cases, hospitalizations […].&quot;</p><p>That was backed up by the WHO&#x27;s August 9 EG.5 risk assessment.</p><div><strong>COVID-19: The seasonal effect</strong></div><p>Despite conclusions drawn at the time of writing, the WHO sees a potential for EG.5 to &quot;cause a rise in case incidence and become dominant in some countries or even globally&quot; due to its &quot;growth advantage and immune escape characteristics&quot; — same as it was with other variants in the omicron lineage of the virus.</p><p>Right now, though, the consensus is that EG.5 is not a big threat. The rise in cases could be explained by the fact that we (in the Northern Hemisphere) are in the midst of a summertime COVID-wave. During the heat of summer, people tend to stay in air conditioned spaces. The virus continues to mutate, protection we had from previous infections diminishes, and the risk of our catching a new infection goes up.</p><p>So, it&#x27;s a good reminder for us to keep COVID-19 in view and under control. Latest reports suggest that updated COVID vaccines — for protection against new variants, including EG.5 — should be available in the coming months.</p><div><em>This article was originally published in German.</em></div>

New omicron subvariant EG.5 Eris has reignited talk about vaccines and speculation about a return of the pandemic.

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COVID variant EG.5: What we know about 'Eris'

Deutsche Welle

Published Aug 16, 2023 11:46 PM PHT

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