真要被禁了就是笑话，我保证再也不会在华人发帖了。 今天没发别的主题。普普通通的新闻贴子： 看来肉要涨价，Hundreds of U.S. Meat Workers Have Now Tested Positive for Virus [url=https://www.bloomberg.com/news/articles/2020-04-10/worsening-outbreak-at-colorado-meat-plant-impacts-as-many-as-300]https://www.bloomberg.com/news/articles/2020-04-10/worsening-outbreak-at-colorado-meat-plant-impacts-as-many-as-300[/url]
A Charlotte woman hasn’t left her house in more than three weeks, yet still tested positive for COVID-19 late Thursday.
.....
“Brummert said aside from the pharmacist and her husband, who grocery shops but is temporarily living in a separate room, the only other person she’s come into contact with is a woman who volunteered to drop off groceries at her doorstep once. Brummert said the woman later tested positive for COVID-19.
“I barely had any contact,” she said. “I didn’t even touch her.”
Brummert said she gets the mail every few days, but always wears gloves. However, she didn’t think to wear gloves when bringing in packages from her front porch. In addition, she said she hasn’t eaten takeout.” vvdd 发表于 4/11/2020 11:57:49 PM [url=https://forums.huaren.us/showtopic.aspx?topicid=2532224&postid=83572422#83572422][img][/img][/url]
我猜是给这人drop off grocery的女的传染的。那女的有新冠手摸了那些蔬菜水果，这人把蔬菜水果拿回家没做消毒就放进屋了。
真要被禁了就是笑话，我保证再也不会在华人发帖了。 今天没发别的主题。普普通通的新闻贴子： 看来肉要涨价，Hundreds of U.S. Meat Workers Have Now Tested Positive for Virus [url=https://www.bloomberg.com/news/articles/2020-04-10/worsening-outbreak-at-colorado-meat-plant-impacts-as-many-as-300]https://www.bloomberg.com/news/articles/2020-04-10/worsening-outbreak-at-colorado-meat-plant-impacts-as-many-as-300[/url]
Effects of Air Temperature and Relative Humidity on Coronavirus Survival on Surfaces
Assessment of the risks posed by severe acute respiratory syndrome (SARS) coronavirus (SARS-CoV) on surfaces requires data on survival of this virus on environmental surfaces and on how survival is affected by environmental variables, such as air temperature (AT) and relative humidity (RH). The use of surrogate viruses has the potential to overcome the challenges of working with SARS-CoV and to increase the available data on coronavirus survival on surfaces. Two potential surrogates were evaluated in this study; transmissible gastroenteritis virus (TGEV) and mouse hepatitis virus (MHV) were used to determine effects of AT and RH on the survival of coronaviruses on stainless steel. At 4°C, infectious virus persisted for as long as 28 days, and the lowest level of inactivation occurred at 20% RH. Inactivation was more rapid at 20°C than at 4°C at all humidity levels; the viruses persisted for 5 to 28 days, and the slowest inactivation occurred at low RH.
Effects of Air Temperature and Relative Humidity on Coronavirus Survival on Surfaces
Assessment of the risks posed by severe acute respiratory syndrome (SARS) coronavirus (SARS-CoV) on surfaces requires data on survival of this virus on environmental surfaces and on how survival is affected by environmental variables, such as air temperature (AT) and relative humidity (RH). The use of surrogate viruses has the potential to overcome the challenges of working with SARS-CoV and to increase the available data on coronavirus survival on surfaces. Two potential surrogates were evaluated in this study; transmissible gastroenteritis virus (TGEV) and mouse hepatitis virus (MHV) were used to determine effects of AT and RH on the survival of coronaviruses on stainless steel. At 4°C, infectious virus persisted for as long as 28 days, and the lowest level of inactivation occurred at 20% RH. Inactivation was more rapid at 20°C than at 4°C at all humidity levels; the viruses persisted for 5 to 28 days, and the slowest inactivation occurred at low RH.
SO TRUE. 的确是这样。不过，中国上班人员，特别食品人员，其实是严格检测的。平时没有检测所有传染病的证书，都不让上班，不要说疫情期间。
其实餐馆做饭的 很多都这样...
支持！美国人，自己国家在大火起萧墙，还在关心国内，各种骂，难道自己不是从那里来的，父母不是中国人？甚至全部亲友不在中国？
我只能理解，这样说的人，是没有任何亲人在中国，简单说，不是华人，至少几代人没有在中国的。
RE. 你太SHARP....一针见血。。。
晕……低温保存病毒，这是常识好吧……COVID-19如果不能低温保存了，才需要发paper……
我越来越觉得华人有台湾资金或者民运资金支持。论坛五毛七毛满地飞，管理的视而不见。劣币驱逐良币。
一看就是学生物的！
我猜是给这人drop off grocery的女的传染的。那女的有新冠手摸了那些蔬菜水果，这人把蔬菜水果拿回家没做消毒就放进屋了。
原来厉害了我的国这部片子是辱华哦
呵呵，居然还要证明病毒在冰箱里不会死。做实验保存病毒的方法就是-80度冰箱，-80度只是为了最大限度保存。-20度，4度，都差不多的。
我以前只听说过许多病毒在干燥常温下，都会死亡， 24度。 这次新冠，需要65度+，30分钟才能杀掉，我估计冰箱冷冻那块，新冠病毒是能长久保存的。
没准还做了色拉
那以后买来的肉也喷喷酒精，洗干净再塞冰箱，这总安全吧？
这病毒也太厉害了， 不给人活路啊
这么说来应该反复解冻再冷冻。。。。
要不然就买回来的肉全都直接进锅里煮到熟透，严格消毒案板水池台面。
不吃小炒肉，只吃回锅肉，不吃鲜肉包，只吃酱肉包，不吃牛排，只吃卤牛肉，炖牛肉
不吃肉，就行了！
Re
都买切好的肉片，回来后，包装都用wipe擦一次然后进冰箱，全部是都是火锅。
一点问题都没有。
那个是培养的单个细胞，我们都是放专门盒子，倒异丙醇，放-80过夜再转液氮。动物tissue要保存完整RNA是直接液氮冷冻。
用共匪这个词的，百分百是台湾人
华人上现在太多台湾的了，带风向不要太明显
还有是终身免疫吗？
一个轮子，一个胎毒，双贱合并，横行华人
原来我不是一个人。以前还有一个比较reasonable的版主，出来说了几句公道话，他也不再是版主了。华人闲话版和大纪元是一家了。
很明显是两派人，有时候看主页和回帖就知道脑残得不行，为了喷而喷
WHY?
主流新闻不敢大肆报道，这事影响人民心里，容易导致恐慌。
养猪厂是有危险的。
尽管说猪大概率不会传染给人……
我老学的就是biomedical，有什么论据跟我直接说，paper，实验数据都行。不用担心我看不懂。
可以去一亩三分地瞅瞅，刚开始用，从闲话走过去真是清爽啊... 都是讨论工作学习的。还有个wfh办公桌帖子简直是一股清流啊~
1450周末都不休息啊。这版上的1450彻底给我坏了对台湾人的观感
学biomedical第一反应难道不是自己搜文献么? 替那个层主发一下 [url=https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2863430/]https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2863430/[/url]
我说你看了你发的文献吗？我当然查过文献，就是没有任何有关冷藏环境下coronavirus的生存时间的研究。
其实到现在，cdc，who官方对covid19 in vitro的生存时间都没有定论。
我才要问你看了文献了么？还能写的更清楚么？SARS 4 度 28天啊。COVID-19的基本数据初期都是以SARS作为重要开始的，你要是杠必须新冠4oC研究，作为biomedical你可以继续查，也未必没有，反正我是随手一搜很多类似的报告。你要的news
[url=https://www.nih.gov/news-events/nih-research-matters/study-suggests-new-coronavirus-may-remain-surfaces-days]https://www.nih.gov/news-events/nih-research-matters/study-suggests-new-coronavirus-may-remain-surfaces-days[/url]
Effects of Air Temperature and Relative Humidity on Coronavirus Survival on Surfaces
Assessment of the risks posed by severe acute respiratory syndrome (SARS) coronavirus (SARS-CoV) on surfaces requires data on survival of this virus on environmental surfaces and on how survival is affected by environmental variables, such as air temperature (AT) and relative humidity (RH). The use of surrogate viruses has the potential to overcome the challenges of working with SARS-CoV and to increase the available data on coronavirus survival on surfaces. Two potential surrogates were evaluated in this study; transmissible gastroenteritis virus (TGEV) and mouse hepatitis virus (MHV) were used to determine effects of AT and RH on the survival of coronaviruses on stainless steel. At 4°C, infectious virus persisted for as long as 28 days, and the lowest level of inactivation occurred at 20% RH. Inactivation was more rapid at 20°C than at 4°C at all humidity levels; the viruses persisted for 5 to 28 days, and the slowest inactivation occurred at low RH.
擦鼻涕不洗手 是平时的问题吧，没有新冠也不能这样啊。
如果说工人感染，咳嗽把病毒散到肉上。那这个威胁也算是比较小的。病毒在猪肉牛肉上面也活不久，也没谁会生吃肉类，锅里炒5分钟病毒肯定死光。。
要注意的是大家做饭的时候肉拿出来先洗干净。
这篇文章说的病毒模拟生存环境是从4度开始往上走。但是冷藏环境是要专门模拟的。所以我前面专门问了是摄氏0度，RH30-35这个条件。这篇文章还说了，即使是4度条件下，sarscov最长生存时间也就是28天，哪里来的永久？
我看的是你回mindstrom的回帖；人家说肉臭了之前，100%不会死。虽然100%有点过于绝对，但是肉放冷藏室28天不会臭么？
‘负责任的说，新冠病毒，如果在肉上，放入-20冰箱，直到你想吃起来吃之前，100%不会死。
如果在4度冰箱，在肉上，我认为在肉臭了之前，100%不会死。
所以，只要真的在肉上，病毒（在你吃的时候）是不会死的！
你不要为了反中而反中，要讲事实，要承认他说的对
mindstrom’
其实我是连同前面一堆ID来回的。你看这几个id，只提温度没提RH就知道他们是外行，因为只要学过病毒学，in vitro的生存率RH指标是一个很重要的指标。covid19现在具体的in vitro生存时间都没定论，所以官方只能建议老百姓在食品外包装消毒做预防。
03年国内对紫外线环境针对sarscov做个研究，那个研究表明uv杀冠状病毒效果不错，可以参考
没有文献，你不会用你生物学common sence来决定么？新冠无非就是一个蛋白壳里藏了段RNA，所有生物sample，不都是越低温保存越久，这需要有争议么？你还是好好把本科biochemistry课本再拿出来读读，顺便看一下蛋白质的变性方法。比你在这秀你的biomedical background来的实际。
大概扫了一眼，他们大意没什么问题..哎，论坛上不能要求大家都很懂啊，你干脆单独开个贴发个简明易懂的版本给大家点建议吧，这样大家就知道你只是对表述方法有点picky而已.. (闲话最近乌烟瘴气，有误伤可能难免吧） 其实我觉得冷冻肉可能是潜在传染源。这几个加工厂那么多人中招，估计跟低温生存环境有利于病毒生存很有关系，处理肉过程中工人交叉感染。新冠一厉害，我们这里华人超市老板第一时间就关了生肉柜台，我当时默默觉得老板是理工科的... 但是其实消费者还好，处理完肉肥皂洗手就好了..
其实武汉华南市场，早期死了许多专门跟牛肉，羊肉储藏相关的商贩，虽然华南名字是海鲜市场，但也有很多肉类的储藏
lol
其实我怀疑新冠是不是猪瘟和某个毒性很弱但传播性极强的betacoronavirus重组后的产品
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