#Presymptomatic

Chris von Csefalvay

chrisvcsefalvay

This may be a truth wasted on @mattyglesias, but over here in science, we generally draw a line between 'knowing' and 'assuming'. Asymptomatic transmission of the #coronavirus causing #COVID19 is

Thanks to David for sending me this link to the summary prepared by the National Centre for Immunisation Research and Surveillance (NCIRS) on the investigations done regarding NSW school cases

Hansika Hanthanapitiya

Hello guys! Here's another hopefully helpful/educational thread on #COVID19 transmission & quarantining! Few important points to be noted on the above topics to understand the situation better. #SciComm #MedEd #PatientEd #lka 1)

1/ Has anyone seen data on the testing specs for rtPCR (sensitivity/specificity) in asymptomatic/presymptomatic #covid19 patients?This is critical-- but if there is low sensitivity/high false negative in this patient population,

1/ The key – & challenge – to stopping #COVID19 is finding & breaking off enough asymptomatic/presymptomatic transmission. This ‘invisible’ spread seems to be driving the epidemic & making it

Dr. Angela Rasmussen

angie_rasmussen

"New evidence has emerged from China indicating that the large majority of coronavirus infections do not result in symptoms." (cue internal screaming) The BMJ should know that asymptomatic and presymptomatic

Carl T. Bergstrom

OK, here are some numbers that really surprise me. Of 200+ women presenting for delivery in NYC, one in six (!!) test positive for #SARSCoV2 with the vast majority of

1/ Presymptomatic transmission is one of the most complex parts of controlling the #covid19 epidemic.Quantitative #covid19 viral loads have been found to be equally high in those with or without

Dr. Kiki Sanford

So, people are asking about whether Biden & Trump got tested prior to the debate. And, this is where we get into the slippery nature of tests, and how you

THREAD1/ This study is important. They looked into false negative rates of PCR for #covid19 the days leading up to symptoms.Even up to the day before symptoms start, the probability

Even before the trip to Durham, how is physically going back to work *after* learning that you are in a COVID+ household (to a degree of confidence where you were

ℍ𝕠𝕤𝕤𝕒𝕚 𝔾𝕦𝕝

I've seen many science-aware people going on about how masks are useless in spread of #COVID19 without really thinking about what the emerging evidence is. I've been wearing a #mask

The New Zealand strategy is a strict lockdown till no new cases, then test and trace until vaccine or treatment.The let-it-rip strategy means letting people get a novel virus with

Nicola Low #EveryDayCounts #StillFBPE

Here’s a short thread on some rather worrying misinterpretations of the meaning and implications of “asymptomatic” #SARS-CoV-2 or #COVID19. This is provoked by a @bmj_latest news item by https://www.bmj.com/content/bmj/369/bmj.m1375.full.pdf Let’s

Amy Cho, MD MBA

Can we be real?How many times do you think someone will be willing (or able) to quarantine for 14 days after a COVID exposure, waiting to see if they are

New study @NatureMedicine estimates that nearly half of #covid19 transmission occurs in the 2-3 days before any symptoms, & peak infectiousness may be close to the actual day that symptoms