2/ Here's the breakdown of COVID-19 exposures and positive cases by school community as of the start of the week.
3/ The trend on youth cases in Arlington... via VDH data.
4/ Looking at cases by school by week... The first is all events (exposures and positives); the second is just positive and likely COVID-19 cases. Disturbing trend in transportation (4 cases), given that so many bus drivers have died according to @LostToCovid.
5/ New data being released by APS showing density of occupancy in school buildings and breakdowns by race on benefits of being inside a school building.

New data sheet link:
apsva.us/wp-content/upl…

Screenshots, ranked by occupancy; Fuller schools don't mandate outside lunch. 🤦🏼‍♀️
6/ As older people in @ArlingtonVA are getting vaccinated (Good work @Matt4Arlington!) and more kids are indoors together in schools, more kids cases are showing up as a higher percentage of overall cases, mirroring the national trend that COVID-19 is becoming a young person's 🦠
7/ After kids returned to a lower occupancy hybrid model, our *detected* COVID-19 cases in Arlington leveled off at a higher rate than mid-fall/early winter so far.
8/ VDH data shows that kids cases are increasing, FYI @GovernorVA. This is what we expected with putting this age group back inside without better, detailed, evidence-based guidance on the settings in school where the virus can breakthrough and continue to jump to new hosts.
9/ Updated list of our Northern Virginia school outbreaks. @GeneralsPride and another APS school that hasn't been revealed will soon be joining @YorktownHS here with confirmed school outbreaks. New investigations are in red. More outbreaks now than last fall.
10/ More data on kids and cases in Arlington...
11/ APS data totally omits some cases that ARE in this age bracket in town. Do the schools not know about these? Is the APS data list missing some cases? (We think that's probable.)

Remember, just added a thread today that shows how known cases are big undercount, for 0-19 age.
12/ A note on APS data — it changes CONSTANTLY. @APSReady says they're deleting duplicate cases.

For instance, @WMS_WolfPack deleted 11 cases, many of them staff +, in the past week. @APS_ATS has deleted 17 cases.

Our list is a snapshot of what was online when we made it.
13/ Data on rising COVID-19 cases in children is being tracked by the American Academy of Pediatrics. April is breaking records for cases in kids, and now we have 3.6-million children who have had this disease (confirmed by tests) in USA.

downloads.aap.org/AAP/PDF/AAP%20…
14/ What will be the long term impact of exposing so many children to a novel and not yet understood disease?

Why haven't we tried harder to mitigate and PROTECT kids from exposure within our schools — but still find a way for them to remain in school?

twitter.com/LongCovidKids
15/ Synopsis of rising kids cases:
mdedge.com/pediatrics/art…

Sharp opinion by two pediatricians on why mitigation matters, esp. for the next year:
usatoday.com/story/opinion/…

Michigan has had a good bit of coverage because when you have a lot of spread...
kcra.com/article/increa…
16/ Sharp breakdowns by race/ethnicity are very apparent in the APS data released in the past week about choices on mode of schooling this spring. Kudos to @SuptDuran for wanting things to be more transparent, posting info like this online:

apsva.us/school-year-20…
17/ More infectious, maybe more severe, variants:

CDC has so many cases they dropped their old tracker. New site: covid.cdc.gov/covid-data-tra…

P.1 is spreading in VA, confirmed, but not listed here yet. VA's numbers in screenshot, steady growth of VOCs, estimated 45% of VA cases.
18/ That's the data roundup this week. We're heading outside and taking a few days' Twitter break. Stay safe, mask up, schedule your vaccine, and choose a True HEPA air cleaner over other air cleaning technologies. We could reduce 95% risk indoors, but take shared meals outside.

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More from @smartrestartaps

22 Apr
1/ A big myth of the "return to school buildings" debate is that COVID-19 magically🧙‍♀️ doesn't spread in kids.

A preprint from an Omaha pilot project debunks this bigly (again).

Another 🧵 with evidence for TESTING to detect and 🛑🦠. #SafetyIsVITAL

abcnews.go.com/Health/study-s…
2/ University of Nebraska Medical Center found:

📌 Lots of asymptomatic COVID-19; testing caught cases MUCH higher than typical school reporting (self-reports and symptomatic).

📌 Staff: 2.5x more COVID

📌 Students: 6x more

📌 10x more 🦠 at school than in community stats
3/ Turns out schools may have missed up to 9 of 10 student cases and 7 of 10 staff cases — before better testing to detect and #StopTheSpread of COVID-19.

📌 District also mitigated risks:
✔️ hybrid
✔️ ¼ occupancy
✔️ 😷
✔️ 6 ft distancing

(HS & MS schools in study)
Read 23 tweets
20 Apr
1/ Study finds indoor sports most likely setting in our schools to spread COVID-19.

Secondary attack rates by setting:
📌indoor, contact sports like🏀, wrestling, cheer (23.8%)
📌staff meetings or lunches (18.2%)
📌elementary school rooms (9.5%)

academic.oup.com/cid/advance-ar…
2/ Tracked COVID-19 cases Dec 11, 2020, to Jan 22, 2021, in an Atlanta district that included 8 elementary schools, 2 middle schools, and a high school. Students were in-person 4 days per week and wore masks, with desks spaced 3 to 6 feet apart. More kids in ES rooms than MS/HS.
3/ All cases confirmed by PCR testing. Secondary attack rate (SAR) — % of contacts who become infected— was calculated by setting (classroom, bus, indoor sports); student or staff; symptomatic or asymptomatic, and time of exposure.

Overall, 9% secondary contacts got sick.
Read 9 tweets
19 Apr
1/ Really tired of reasonable, critical, school safety mitigations being mired in politics. Local "open schools/COVID just flu" groups are funded by GOP hardliners w/extreme views on masks, vaccines and need for public health regs.

(Lost an election? Try a recall.)
2/ And yet, we may have a lot of room actually for common ground and a return to reason, a return to a common set of working facts — sensible precautions to keep school buildings open.

pewresearch.org/fact-tank/2021…
3/ Concerns are heightened when people have more experience with COVID-19. We should be erring on the side of doing more for safety, not less.

@APSVirginia won't commit to masks or 3' distance in fall, but families must choose a fall learning model now!

pewresearch.org/fact-tank/2021…
Read 6 tweets
20 Mar
1/ Airborne transmission, and the 3 feet vs. 6 feet question: A 🧵 with links for policy advocates trying to sort through the science...

WARNING: Nuance Ahead
2/ COVID-19 is mainly spread by inhaling small particles.

Timeline with illustrations, articles, studies:
#COVIDisAirborne #masks4All #bewareOfSharedAir #ventilation. See: its-airborne.org/covid19-timeli… via @AerosolizedC19

Airborne Transmission FAQ by experts: tinyurl.com/FAQ-aerosols
3/ In addition, here's Dr. @linseymarr and Dr. @jljcolorado's bibliography regarding "Transmission of COVID-19." They're top experts.
tinyurl.com/p4h9mbzz

"What We Know" 2021 summary: Respiratory plumes/short-range "close" exposure are <1.5 m (4.92 ft)
tinyurl.com/3sbktpzz
Read 27 tweets
19 Mar
1/ CDC revises guidance on 3 feet and 6 feet... A 🧵 stitching together so many updates today!

nytimes.com/2021/03/19/sci…
2/ A recent study in Boston found no significant differences in the # of infections in school districts in Massachusetts that adopted a 3-foot rule, when compared with those that required 6 feet of distance.

But there are problems with study. A few here:
3/ In reality, both 3 feet and 6 feet guidelines are arbitrary. Small airborne particles — that can be inhaled — travel either distance easily.

The farther away you are, the less likely you are to breathe in another's exhaled breath (and virions.)
tinyurl.com/2nzc67vr
Read 17 tweets

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