Or maybe they aren't necessary i.e. New Zealand and Australia.flyingaggie12 said:
Mask work, i.e Japan.
This one isn't trueCarnwellag2 said:
Is anyone actually able to keep track anymore with all the flip flopping
HCQ bad now good
Because there is a LONG history of "toughing it out" and coming to work when not feeling well. Or they think they are hung over when it is actually the prodrome period.cone said:
how do you reconcile the meat packing plants?
or the nursing homes?
this doesn't make sense at all
HotardAg07 said:
From what I have read, the general public and doctors have different definitions of asymptomatic. That is, a person may have a mild fever and not realize it or might have something they dismiss for other reasons that later turn out to have been COVID. Those people, medically, are still symptomatic.
This also seems to be making the distinction between asymptomatic patients and pre-symptomatic patients.
AggieSarah01 said:
Then can we please get rid of at least some of the sillier mask requirements then, please?
Quote:
Current evidence suggests that most transmission of COVID-19 is occurring from symptomatic people to others in close contact, when not wearing appropriate PPE. Among symptomatic patients, viral RNA can be detected in samples weeks after the onset of illness, but viable virus was not found after day 8 post onset of symptoms (19, 20) for mild patients, though this may be longer for severely ill patients. Prolonged RNA shedding, however, does not necessarily mean continued infectiousness. Transmissibility of the virus depends on the amount of viable virus being shed by a person, whether or not they are coughing and expelling more droplets, the type of contact they have with others, and what IPC measures are in place. Studies that investigate transmission should be interpreted bearing in mind the context in which they occurred.
There is also the possibility of transmission from people who are infected and shedding virus but have not yet developed symptoms; this is called pre-symptomatic transmission. The incubation period for COVID-19, which is the time between exposure to the virus and symptom onset, is on average 5-6 days, but can be as long as 14 days.(21, 22) Additionally, data suggest that some people can test positive for COVID-19, via polymerase chain reaction (PCR) testing 1-3 days before they develop symptoms.(23) Pre-symptomatic transmission is defined as the transmission of the COVID-19 virus from someone infected and shedding virus but who has not yet developed symptoms. People who develop symptoms appear to have higher viral loads on or just prior to the day of symptom onset, relative to later on in their infection.(24)
Some people infected with the COVID-19 virus do not ever develop any symptoms, although they can shed virus which may then be transmitted to others. One recent systematic review found that the proportion of asymptomatic cases ranged from 6% to 41%, with a pooled estimate of 16% (12%20%),(25) although most studies included in this review have important limitations of poor reporting of symptoms, or did not properly define which symptoms they were investigating. Viable virus has been isolated from specimens of pre-symptomatic and asymptomatic individuals, suggesting, therefore, that people who do not have symptoms may be able transmit the virus to others.(26) Comprehensive studies on transmission from asymptomatic individuals are difficult to conduct, but the available evidence from contact tracing reported by Member States suggests that asymptomatically-infected individuals are much less likely to transmit the virus than those who develop symptoms.
Among the available published studies, some have described occurrences of transmission from people who did not have symptoms.(21,25-32) For example, among 63 asymptomatically-infected individuals studied in China, there was evidence that 9 (14%) infected another person.(31) Furthermore, among two studies which carefully investigated secondary transmission from cases to contacts, one found no secondary transmission among 91 contacts of 9 asymptomatic cases,(33) while the other reported that 6.4% of cases were attributable to pre-symptomatic transmission.(32) The available data, to date, on onward infection from cases without symptoms comes from a limited number of studies with small samples that are subject to possible recall bias and for which fomite transmission cannot be ruled out.
From what I read a few days ago, those who will develop symptoms have a much higher viral load than those who will never develop symptoms.DTP02 said:
I wonder about the difference between asymptomatic and presymptomatic. Are they differentiating at all between the people who stayed asymptomatic and people who are asymptomatic at the time of contact but who later develop symptoms (i.e. presymptomatic)?
As a layperson, it makes sense to me that presymptomatic people are more likely to transmit than asymptomatic people.
Do meat packing plant workers get paid for sick days? Or do they not get paid those days when they don't work? If the latter, there would be good reason for them to keep working when sick.cone said:
how do you reconcile the meat packing plants?
or the nursing homes?
this doesn't make sense at all
Quote:
Bloomberg: The World Health Organization says it's still "rare" for a person infected with Covid-19 to "transmit onward to a secondary individual." Officials made the remarks on Monday, June 8, at a daily briefing in Geneva.
