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Kimberly Prather, Ph.D. Profile picture
@kprather88
May 6, 2022 • 16 tweets • 4 min read • Read on X
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Slides & words from my @OSHA_DOL testimony on April 28, 2022. I really hope it helps as there is no excuse to not fully protect healthcare & essential workers from airborne transmission of this virus. All workers deserve full protection. #COVIDisAirborne

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More from @kprather88

Kimberly Prather, Ph.D. Profile picture
Mar 8
(1/23) More on the largest ongoing environmental health crisis in the United States. Many of you asked for more details on our Tijuana River research after my thread yesterday []. Here's what we (@airborne_ucsd) have found so far — and why no one should be forced to breathe this toxic air for another day. 🧵
(2/23) When ~240 million gallons of sewage recently leaked into the Potomac River near DC, it was declared a state of emergency within days. The @NYTimes incorrectly labelled it as the largest sewage leak in U.S. history. The Tijuana River releases that amount every few days continuously — and has for years. No emergency declaration. No national outcry. This is environmental injustice, plain and simple.
(3/23) See @nbc7sandiego story on the frustrated reactions of local residents to the @NYTimes erroneously labelling the Potomac River () spill the worst in U.S. history:. They've been living through something far worse — for years — with only a tiny fraction of the attention.
Read 23 tweets
Kimberly Prather, Ph.D. Profile picture
Mar 7
🧵Right now, 40–80 MILLION gallons of raw sewage and wastewater flow through San Diego's South Bay region EVERY DAY — poisoning the air, water, and people in some of California's most socio-economically challenged communities. This is the largest ongoing environmental crisis in the U.S. Most Americans have no idea. A thread. (1/10) 👇
My team's study in @ScienceMagazine (Rico et al., 2025) established for the first time a direct link between contaminated water and hazardous AIR quality. We measured hydrogen sulfide — a gas that attacks the respiratory and nervous systems — at 4,500x typical urban levels. (2/10)
But H₂S is just the beginning. We're detecting massive levels of heavy metals, thousands of other gases, PFAS (forever chemicals), pharmaceutical compounds, and drugs in polluted river foam — and airborne pathogens carried from the contaminated waterway directly into neighborhoods where families live and children go to school. (3/10)
Read 10 tweets
Kimberly Prather, Ph.D. Profile picture
Mar 3
1/ If I hear one more public official call indoor air filters a "band-aid," I'm going to explode! It's so logical, yet so readily dismissed. Filtering indoor air should be as standard as filtering water. Full stop. 🧵
2/ Measles, flu, COVID-19, norovirus—most infectious diseases spread through the air we breathe. We just accept that everyone gets sick indoors. It doesn't have to be this way.
3/ And it's not just pathogens. Wildfire smoke, heavy metals, toxic gases, soot—all flowing into your lungs, heart, and even your brain with every single breath you take.
Read 9 tweets
Kimberly Prather, Ph.D. Profile picture
Jan 26, 2025
The science/research landscape (at least in the US) has evolved so much since I began. It used to be about forming a hypothesis and exploring it—you might be right, you might be wrong. You'd design the best experiment to test it. Often in science, being "wrong" (1/)
helps us end up learning so much more and possibly changing a longstanding "belief"-referred to as a paradigm shift. Now you get called out for being wrong and called all kinds of names by those (non-scientists) who your hypothesis/finding feel inconvenienced. (2/)
It's a really sad time as it has become difficult to talk to anyone about our best ideas/thoughts because there are "two sides" now even in science. If you say you are trying to understand the reason for the differences, people will immediately classify you as the problem. (3/)
Read 6 tweets
Kimberly Prather, Ph.D. Profile picture
Jan 13, 2025
Getting questions about LA -- the air looks really clean right now. That is because the PM levels (which scatter light) are very low (the air is being pushed out to sea). However, air toxins are still present from the burning of structures and synthetic materials. More...(1/2)
The AQ index being reported says "Good"--that is based on a handful of criteria pollutants like ozone and NOx (and PM). There are literally thousands of other gases present in the air right now which will react away and become more dilute over time. Stay safe. (2/2)
Current AQI readings with areas of fires marked in red: Image
Read 5 tweets
Kimberly Prather, Ph.D. Profile picture
Oct 28, 2024
Sad to see a few surfers and couple of weak writers saying I was alarmist during Covid and now again w/ high H2S levels in air. Alarmist? Really? How about thank you for helping you and your family stay safe. Yes I still would not go in the ocean with raw sewage. Not a chance.
Further..yes we have since shown that bacteria from the polluted ocean/river water can become airborne. No that dumb woman was not wrong then or now.

pubs.acs.org/doi/full/10.10…
It is a battle between just ignoring idiots who clearly don't read the scientific literature versus speaking up because you're concerned their idiocy confuses others. I care a lot about the public--and these dudes clearly do not. Yes, a reporter from the LA Times (1/2)
Read 4 tweets

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