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Mike Hoerger, PhD MSCR MBA Profile picture
@michael_hoerger
Sep 26, 2022 • 11 tweets • 12 min read • Read on X
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Empowered communities want free #N95 masks!

Our new pre-print shows that people are excited to use N95s during COVID surges when given them for free w/helpful information on their evidence & how to use them.
1/
 psyarxiv.com/f76vw Study abstract: People want...Project banner: Free N95 Qu...Aegle N95, given away in th...
You might remember when we posted about the study back in December!

I hope you find the results useful. We tried to make the figures relatable, even if you're not reading science articles every day. Please let me know if you have questions!
2/
We gave out 2,500 #N95 masks in 5 packs to our racially & socioeconomically diverse community. Many used N95s for the 1st time. People treated us like we were giving them kidneys. So grateful!

97% used at least 1 N95 & 40% used all 5 within 1-mo!

3/
We called our #N95 giveaway study "Project #Bandura," named for the famous #psychologist who studied social learning.

Well -- people learned, socially! >80% of participants told others about N95s. Several enthusiasts shared w/dozens of ppl!
4/
Cost was the biggest barrier to sustained #N95 use!

Still, ppl planned to buy an average of >10 more N95s in the near future (2x what we gave them).

More interesting, if FREE, 88% would use N95s again. Once you pop, you can't stop!
5/
We only gave away 2,500 N95s. It was labor intensive b/c we included educational materials, had a follow-up survey, went through IRB, etc.

However, it validates @amandalhu's 17,000 mask giveaway, those of cities and fed govt's.

Free N95 & #BetterMasks are hugely popular!
6/
As a #psychologist, there is 1 big truth I believe w/my heart. If you talk to most ppl in a way that's reasonable, about 97% will feel empowered to take actions to improve their lives & communities.

As true for COVID as anything else. We just need more courageous leadership.
7/
With N95s extremely popular during #COVID surges, what's the national strategy?

The U.S. had a stockpile and started giving them out for free (after my psychology research team 🤣). There are no known plans to buy and distribute more.

8/11
Domestic manufacturers are selling off #N95 inventory & equipment after boom-and-bust cycles. Many are closing their doors.

It's a low-cost filter. For your face. That keeps you from getting sick & becoming disabled or dying.

What are we doing???
9/11
Thanks if you posted about #CovidisAirborne. The study is dedicated to you.

You converted me from cloth masks to N95s.

Shouldn't we have federal #policy priorities to make high-quality masks available to everyone during surges?

10/11
Thank you- @LazarusLong13 @Amal4Solutions @TySopko @kprather88 @joaquinlife @sri_srikrishna @PPEtoheros @AegleCo @projectn95 @crosscutanne @NgoTheWorld @JudahWorldChamp @amandalhu @micah_arsham @LauraMiers @mehdirhasan @KDNyhan @DrJenPlatt @akm5376 @JimRosenthal4 @CorsIAQ
11/11

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More from @michael_hoerger

Mike Hoerger, PhD MSCR MBA Profile picture
Aug 12
PMC COVID Dashboard, August 11, 2025 (U.S.)

The CDC says transmission is heating up.

"Very High" (3)
🔺Guam
🔺Hawai'i
🔺Louisiana

"High" (12)
🔺Alabama
🔺Alaska
🔺California
🔺Colorado
🔺Delaware
🔺Florida
🔺Indiana
🔺Mississippi
🔺Nevada
🔺S. Carolina
🔺Texas
🔺Utah

🧵1/12Heat map from CDC data. High/Very high states noted in post
Transmission is highest in these regions. Graphics note the CDC levels and PMC prevalence estimates.

🔥Louisiana (Very High): 1 in 19 actively infectious
🔥Guam (Very High): 1 in 26
🔥Hawai'i (Very High): 1 in 28
🔥Texas (High): 1 in 45

🧵2/12 Graphics show heat maps and prevalence estimates, noted in the post
Statewide transmission remains "High" in Florida, according to the CDC. PMC estimates 1 in 50 actively infectious.

Several cities report "Very High" transmission. Several sites are offline.

🧵3/12 Heat map and prevalence estimate noted in the post
Read 12 tweets
Mike Hoerger, PhD MSCR MBA Profile picture
Jul 29
PMC COVID Dashboard, July 28, 2025 (U.S.)
🧵1/12

PMC estimates 400,000 new daily infections. 1 in 118 people actively infectious.

Weekly stats:
🔹2.8 million infections (>40x reported cases)
🔹>140,000 resulting #LongCOVID cases
🔹>1,000 resulting excess deaths Heat map Very High: Louisiana, Guam High: Hawai'i, Florida
PMC COVID Dashboard, July 28, 2025 (U.S.)
🧵2/12

Please excuse any typos and delays. Any time Mimal's boot turns deep red, we're doing local outreach in addition to dashboard work, etc.

If you don't know Mimal yet, you won't be able to unsee them.
es.wikipedia.org/wiki/MIMALDeep red boot = Louisiana
Minnesota (M), Iowa (I), Missouri (M), Arkansas (A), Louisiana (L) = Mimal Louisiana is the boot. Sometimes depicted with Kentucky fried chicken on a Tennessee pan.
PMC COVID Dashboard, July 28, 2025 (U.S.)
🧵3/12

It's HOT COVID SUMMER in the Deep South. No geographic/political prejudices, see next.

Covid is burning through Guam, Louisiana, Florida, and Texas (underestimate due to sites down). Louisiana: 1 in 32, Very High (CDC)
Texas: 1 in 98, Moderate (underestimate, CDC)
Guam: 1 in 25, Very High (CDC)
Florida: 1 in 59, High (CDC)
Read 12 tweets
Mike Hoerger, PhD MSCR MBA Profile picture
Jul 25
U.S. CDC numbers just released. Good news (for those not in Louisiana). "Only" a 5% national increase.

2025 has closely tracked with summer 2023 transmission. A 12-13% increase would have been expected based on those numbers. That said... Up: Midwest, Northeast Down: West, South
real-time data have been prone to retroactive corrections. This is frustrating, of course, because it leaves people making decisions based on data that are only of good quality when 2 weeks old.

If we saw a 12% increase this week, I'd say look at 2023 for a glimpse...
at the future. Instead, I would consider these plausible scenarios:
🔹Wave still similar to 2023
🔹Later wave with schools more implicated
🔹Something temporarily much better

Of course, temporarily better often means...
Read 6 tweets
Mike Hoerger, PhD MSCR MBA Profile picture
Jul 21
1. PMC COVlD Dashboard, July 21, 2025 (U.S.)

COVlD is surging in 7 states, according to the CDC.
🔹Hawai'i (Very High)
🔹California (High)
🔹Nevada (High)
🔹Texas (High)
🔹Louisiana (High)
🔹Florida (High)
🔹South Carolina (High) Heat map, summarized in post
2. PMC COVlD Dashboard, July 21, 2025 (U.S.)

Western surge:
🔹California: 1 in 63 actively infectious, much higher in LA & Bay areas
🔹Hawai'i: 1 in 35 actively infectious
🔹Nevada: 1 in 63 actively infectious

These are wastewater derived estimates, not from individual tests CA map with stat summarized in post
NV map with stat summarized in post
HI map with stat summarized in post
3. PMC COVlD Dashboard, July 21, 2025 (U.S.)

Southern surge:

🔹Texas: 1 in 56
🔹Louisiana (New Orleans): 1 in 65
🔹Florida: 1 in 66
🔹South Carolina: 1 in 71

Again, wastewater estimates (wise indicator), not individual testing (low-quality data). SC map and stat noted in post
LA map and stat noted in post
FL map and stat noted in post
TX map and stat noted in post
Read 12 tweets
Mike Hoerger, PhD MSCR MBA Profile picture
Jul 15
1) PMC COVlD Dashboard, July 14, 2025 (U.S.) 🧵

We estimate 1 in 148 Americans are actively infectious. This equates to 2.3 million infections/week, expected to result in >100,000 new #LongCOVID conditions & >800 deaths.

A room of 100 people is a coin toss of an exposure. Figure shows each wave of the pandemic. Tables: Current Levels for Jul 14, 2025 % of the Population Infectious 0.7% (1 in 148) New Daily Infections 324000 New Weekly Infections 2268000 Resulting Weekly Long COVID Cases 113,000 to 454,000 Resulting Weekly Excess Deaths 800 to 1,300 Monthly Forecast Average % of the Population Infectious 1.3% (1 in 80) Average New Daily Infections 598766.6667 New Infections During the Next Month 17963000 Resulting Monthly Long COVID Cases 898,000 to 3,593,000 Resulting Monthly Excess Deaths 6,400 to 10,700 Running Totals Infection...
2) PMC COVlD Dashboard, July 14, 2025 (U.S.) 🧵

Transmission (red) is closely tracking the path of 2 years ago (yellow). However, the incoming data are spotty. >20% of CDC states have limited/no data, & Biobot hasn't reported in weeks.

Could be MUCH worse or slightly better. Graph of year over year transmission. The current year (red) is tracking the path of two years ago (yellow) extremely closely. Two years ago, the peak was around September 1, at about 1 million daily estimated infections, and significantly higher than the Delta wave (blue).
3) PMC COVlD Dashboard, July 14, 2025 (U.S.) 🧵

Our model formalizes the mathematical assumptions in those predictions. If transmission follows what we know in terms of how waves grow or slow generally and historical patterns, this is what we'd expect.

The spottiness of the current real-time data reduce precision substantially. Retroactive corrections can make the forecast jump around from better to worse from one week to the next. Expect the worst. Hope for the best.Graph shows national transmission expected to increase the next several weeks.
Read 11 tweets
Mike Hoerger, PhD MSCR MBA Profile picture
Jul 2
🌍Want to track COVID transmission accurately worldwide?

This PMC thread walks you through leading dashboards with information more up to date than WHO & EU directories.

🧵 1/ World map, countries with high-quality up-to-date surveillance systems shown in blue.
The Pandemic Mitigation Collaborative (PMC) Dashboard provides weekly COVID updates for the U.S., using wastewater surveillance derived case estimation models and analytic forecasting.

We have added a list of international dashboards:
🧵 2/
pmc19.com/data/index.php…Australia: NSW Health Australia Department of Health, Western Australia Austria: Federal Government of Austria City of Vienna - Regional Coron-A Consortium Austria Czech Republic: State Health Institute Czech Republic Belgium: Belgian Institute for Health Canada: Government of Canada Andrew Young's Canada Visualization C19 Resources Canada * World Health Network (WHN) Canada **
Denmark: Statens Serum Institut Denmark Europe (multi-national): EU Wastewater Observatory Finland: National Institute for Health and Welfare Finland WHN Finland ** France: French Republic Data Airborne Risk Reduction Association (ARRA) France Zan Armstrong's France Visualization COVID Weather App France (Android, IOS, or Web) Thomas Delattre's France Visualization Germany: Infection Radar Germany Bay-VOC Bavaria Region Berlin Waterworks WHN Germany **
Hong Kong: Centre for Health Protection, Hong Kong Hungary: National Center for Public Health and Pharmacy of Hungary India: Pune Knowledge Cluster of India Gujarat Biotechnology Research Centre of India Ireland: Health Protection Surveillance Centre Ireland Japan: Japan Institute for Health Security Latvia: Institute of Food Safety, Animal Health and Environment Latvia Lithuania: National Public Health Centre of Luthuania Luxembourg: Microbs Luxembourg Netherlands: National Institute for Public Health and the Environment Netherlands WHN Netherlands ** New Zealand: New Zealand Institute for...
Slovenia: National Institute of Public Health Slovenia Spain: Government of Catalonia - Regional South Africa: National Institute for Communicable Diseases of South Africa South Korea: Korea Disease Control and Prevention Agency Sweden: Pathogens Sweden Switzerland: Swiss Confederation Federal Office of Public Health ETH Zurich Switzerland WISE Dashboard U.K.: Public Health Scotland Buckinghamshire Disability Service (BuDS) U.K. *See the numbers 1-21 along the lower left. Click on 3-6 for national and regional data. ** Click on the dropdown menu. May need to try a different web browser.
Our international directory includes official government dashboards & those developed by citizen scientists.

We exclude countries that have stopped reporting in the past 2-12 months even if on EU or WHO lists. We also exclude low-quality data from opt-in testing programs.
🧵 3/
Read 43 tweets

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