Do pathogens always evolve to be less virulent? The virulence-transmission trade-off in light of the COVID-19 pandemic.

IF 1.8 4区 生物学 Q3 BIOLOGY
Ádám Kun, András G Hubai, Adrienn Král, Judit Mokos, Benjámin Áron Mikulecz, Ádám Radványi
{"title":"Do pathogens always evolve to be less virulent? The virulence-transmission trade-off in light of the COVID-19 pandemic.","authors":"Ádám Kun,&nbsp;András G Hubai,&nbsp;Adrienn Král,&nbsp;Judit Mokos,&nbsp;Benjámin Áron Mikulecz,&nbsp;Ádám Radványi","doi":"10.1007/s42977-023-00159-2","DOIUrl":null,"url":null,"abstract":"<p><p>The direction the evolution of virulence takes in connection with any pathogen is a long-standing question. Formerly, it was theorized that pathogens should always evolve to be less virulent. As observations were not in line with this theoretical outcome, new theories emerged, chief among them the transmission-virulence trade-off hypotheses, which predicts an intermediate level of virulence as the endpoint of evolution. At the moment, we are very much interested in the future evolution of COVID-19's virulence. Here, we show that the disease does not fulfill all the assumptions of the hypothesis. In the case of COVID-19, a higher viral load does not mean a higher risk of death; immunity is not long-lasting; other hosts can act as reservoirs for the virus; and death as a consequence of viral infection does not shorten the infectious period. Consequently, we cannot predict the short- or long-term evolution of the virulence of COVID-19.</p>","PeriodicalId":8853,"journal":{"name":"Biologia futura","volume":"74 1-2","pages":"69-80"},"PeriodicalIF":1.8000,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10066022/pdf/","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Biologia futura","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.1007/s42977-023-00159-2","RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"BIOLOGY","Score":null,"Total":0}
引用次数: 2

Abstract

The direction the evolution of virulence takes in connection with any pathogen is a long-standing question. Formerly, it was theorized that pathogens should always evolve to be less virulent. As observations were not in line with this theoretical outcome, new theories emerged, chief among them the transmission-virulence trade-off hypotheses, which predicts an intermediate level of virulence as the endpoint of evolution. At the moment, we are very much interested in the future evolution of COVID-19's virulence. Here, we show that the disease does not fulfill all the assumptions of the hypothesis. In the case of COVID-19, a higher viral load does not mean a higher risk of death; immunity is not long-lasting; other hosts can act as reservoirs for the virus; and death as a consequence of viral infection does not shorten the infectious period. Consequently, we cannot predict the short- or long-term evolution of the virulence of COVID-19.

Abstract Image

病原体总是进化得毒性更小吗?COVID-19大流行背景下的毒力传播权衡。
与任何病原体有关的毒力进化方向是一个长期存在的问题。以前,理论上认为病原体应该总是进化得毒性更小。由于观察结果与这一理论结果不一致,新的理论出现了,其中主要是传播-毒力权衡假说,该假说预测毒力的中间水平是进化的终点。目前,我们对COVID-19毒力的未来演变非常感兴趣。在这里,我们表明疾病不满足假设的所有假设。就COVID-19而言,更高的病毒载量并不意味着更高的死亡风险;免疫力不是持久的;其他宿主可以作为病毒的宿主;病毒感染导致的死亡并不会缩短感染期。因此,我们无法预测COVID-19毒力的短期或长期演变。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
Biologia futura
Biologia futura Agricultural and Biological Sciences-Agricultural and Biological Sciences (all)
CiteScore
3.50
自引率
0.00%
发文量
27
期刊介绍: How can the scientific knowledge we possess now influence that future? That is, the FUTURE of Earth and life − of humankind. Can we make choices in the present to change our future? How can 21st century biological research ask proper scientific questions and find solid answers? Addressing these questions is the main goal of Biologia Futura (formerly Acta Biologica Hungarica). In keeping with the name, the new mission is to focus on areas of biology where major advances are to be expected, areas of biology with strong inter-disciplinary connection and to provide new avenues for future research in biology. Biologia Futura aims to publish articles from all fields of biology.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信