1/ This is one of the best pieces you will read to put Trump's #covid19 infection into context.
As a physician, so much of what @edyong209 writes here resonates deeply, particularly that the language we use to describe disease is very problematic.
2/ While this is important in many ways, high filtrate masks are *most critical* for frontline workers who are regularly confronted with conditions in which aerosol spread can happen more easily.
3/ You know-- the frontline workers who literally kept this economy and this country afloat on their backs while those who were more privileged could safely "stay home".
These are some of our society's most vulnerable people; and they deserve to be *protected*
1/ The CDC guidelines that are finally acknowledging aerosols-- particles that hang around in the air/travel more than 6 feet--playing a role in #covid19 transmission is *not new*
Within the public health community, it was clear that they did play *some* role, unclear how big
2/ But even now, what % of transmission is happening via respiratory route that is *not* from droplets is unclear.
What we suspect is that in situations w/ poor ventilation, crowds, & sustained contact, aerosols (in addition to droplets) can lead to transmission of the #covid19.
3/ This has a number of implications for public health--especially as it relates to what level of minimal protection (type of mask) is needed in different situations.
As healthcare workers, we are using N95 masks if #covid19 is suspected or confirmed.
NEW: CDC has now *officially* updated their #covid19 transmission guidelines acknowledging that the virus can hang around in the air for several mins or more— & it can transmit beyond 6 feet in scenarios with poor ventilation that are enclosed.
2/ Several outbreak studies have suggested this for months—& yet it is only now that this is being officially acknowledged
This is one of my personal biggest issues w/ our epidemic response— despite having some data, we don’t move to act when benefits of doing so outweigh costs
3/ Our communications to the public have focused almost exclusively on droplet-based spread— “6 feet apart” and “wear a mask”.
6 feet apart is NOT always sufficient!
And cloth masks are NOT designed to stop aerosols that hang around in the air.
1/ Reports that Trump received #dexamethasone— a steroid that should only be used on patients who require oxygen or are critically ill with #covid19. This was proven to reduce mortality in the RECOVERY trial published in @NEJM earlier this year.
2/ But, they found no mortality benefit in patients that were not on supplemental oxygen or ventilators.
In fact, those patients actually had a slightly higher mortality rate, although not statistically significant.
3/ The basic premise is that once you are sick enough, your immune response is what needs to be tempered/ what may end up killing you rather than the virus itself. So steroids can help control this.
Thread 1/ Covid alert NY--> an app that uses bluetooth technology to help notify people if they were exposed within 6 feet to someone who tests positive for #covid19 w/o storing any personal information & without tracking location.
2/ Closing the exposure to quarantine/isolation window is critical to stop spread
Recent report from NC--> specimen collection to contact notification median of *6 days*
A number of cases did not report *any* contacts, & many could not be reached at all cdc.gov/mmwr/volumes/6…
3/ If enough people opt-in to a bluetooth based exposure notification system, we can re-direct resources appropriately, particularly around who to test; also increase *speed*
Exposure notification needs to take time spent/location of exposure into account as well.