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Japan confirms coronavirus infections without symptoms

www3.nhk.or.jp

51–60 of 85 posts

Re: Japan confirms coronavirus infections without symptoms

#51

Earlier quoted context omitted.

It’s so infuriating to try to read that great info in a million disjointed tweets. I don’t get Twitter character limits at all in the year 2020.

It's so infuriating to see people using Twitter for what it's not, and also in this case for causing undue worry.

I hate people using it as a freaking Powerpoint replacement... Bullet point after tedious bullet point, great job presenting your knowledge, Mr. Expert! /s

Re: Japan confirms coronavirus infections without symptoms

#52
post #37

I wonder what the specificity of the test is. Even 99% would still mean that out of 200 passengers, these two would just be the expected number of false positives, unless they have done a confirmatory test on them.

They are professionals. Let's give them benefit of doubt, shall we? (I don't know about this specific case, but yes confirmatory testing is usual protocol.)

Re: Japan confirms coronavirus infections without symptoms

#53

The article says a "new type of coronavirus", which is presumably a misunderstanding on the reporter's part; it seems more likely that these are asymptomatic carriers of the same virus. However, if there really is a symptomless or near-symptomless variant, this would actually be great news, since it would spread rapidly and provide immunity against virulent strains. And this in fact is what appeared to happen with th…

"New type of coronavirus" is is the current official name for the coronavirus spreading from Wuhan.

Re: Japan confirms coronavirus infections without symptoms

#54

In some ways that's positive. If the number of cases is higher than thought, then the deadliness is lower.

75% of those cases are less than 5 days old, 50% are less than 2-3 days. Assuming it takes a day or two for symptoms to ramp up, the death count so far is half or less of what it will be for the 7.7 now infected. Just from these numbers, I'd expect it to end up around 4.5%.

Re: Japan confirms coronavirus infections without symptoms

#55
post #24
post #22

Earlier quoted context omitted.

> the German man [...] said he had a mild fever in the weekend and slept it off, and came to work on Monday, which must mean he had recovered. Unfortunately, this isn't a valid assumption. Lots of people come in to work sick - just yesterday we had to ask our boss to send someone home because they showed up to work caughing and sneezing all day (Today, two other coworkers aren't coming in because they're not feeling…

I would turn that around. There is a substantial amount of healthy individuals who end up in in ICU or worse due to the virus. This is certainly different from the common flu, for example.

According to Wikipedia, the flu causes 3-5 million severe cases and 650,000 deaths worldwide each year. https://en.wikipedia.org/wiki/Influenza

Re: Japan confirms coronavirus infections without symptoms

#56

The article says a "new type of coronavirus", which is presumably a misunderstanding on the reporter's part; it seems more likely that these are asymptomatic carriers of the same virus. However, if there really is a symptomless or near-symptomless variant, this would actually be great news, since it would spread rapidly and provide immunity against virulent strains. And this in fact is what appeared to happen with th…

Haven't the genetic sequences shown that there's so far only one variant? It's not surprising that there would be symptomless carriers, since it apparently can have quite a long incubation period. They may develop symptoms within a couple of weeks.

Re: Japan confirms coronavirus infections without symptoms

#57

The article says a "new type of coronavirus", which is presumably a misunderstanding on the reporter's part; it seems more likely that these are asymptomatic carriers of the same virus. However, if there really is a symptomless or near-symptomless variant, this would actually be great news, since it would spread rapidly and provide immunity against virulent strains. And this in fact is what appeared to happen with th…

That's not the way I read the report. I read it as it is confirmed that the virus can spread before the symptoms appear. No where is it stated that there is a new variant.

Re: Japan confirms coronavirus infections without symptoms

#58
post #8

Earlier quoted context omitted.

The virus changes rapidly, not unlike the flu. A vaccine isn't likely to be effective to eradicate it, and it will likely stay around as a permanent epidemic like the flu or HIV. Virulence can increase or decrease randomly in the future, but the spread doesn't seem like it can be contained, since a perfect quarantine can't be maintained at this scale. We'll have to live with a new virus and pay the price of some natu…

Does immunity still hold for the changed virus?

Depends whether the targeted antigen has changed. Best case (for humans) is if it couldn't escape the targeting without deactivating the virus.

RNA viruses do change quickly, but influenza's probably on a different level with its multi-segment, randomly assorted genome.

Re: Japan confirms coronavirus infections without symptoms

#59
post #31

Earlier quoted context omitted.

I don't want to alarm anyone but the WHO posted to Twitter that while there are 100 or so deaths, there are 700ish in critical condition. The final numbers aren't even in yet. That'd be a 20% serious hospitalization proportion, but I'm not sure if that's the right way to make such a calculation - you may need to adjust the probability based on total uninfected population or something Bayesian like. Edit: it was not t…

China CDC official numbers are 170 dead and 1370 critical among 7711, as of 30th 00:00.

I imagine China is severely underreporting the numbers. I got downvoted last time I suggested it, but this is a modern day, protectionist, authoritarian state which controls what its people can say and see.

Re: Japan confirms coronavirus infections without symptoms

#60

The article says a "new type of coronavirus", which is presumably a misunderstanding on the reporter's part; it seems more likely that these are asymptomatic carriers of the same virus. However, if there really is a symptomless or near-symptomless variant, this would actually be great news, since it would spread rapidly and provide immunity against virulent strains. And this in fact is what appeared to happen with th…

That's not the way I read the report. I read it as it is confirmed that the virus can spread before the symptoms appear. No where is it stated that there is a new variant.

I'm not sure that et even says that, just that they tested everybody who arrived on the plane and found a few with the infection but no symptoms. It doesn't say whether they can spread the infection in that state.
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