Stephen Leonard (@stepleon) profile picture

Principal Solutions Architect helping Enterprises with their Applications and Custom Solutions. I work at BlackBerry, but views and tweets are my own. @stepleon

United States
Joined August 2008
Photo by Stephen Leonard (@stepleon)Photo by Stephen Leonard (@stepleon)Photo by Stephen Leonard (@stepleon)Photo by Stephen Leonard (@stepleon)Photo by Stephen Leonard (@stepleon)
Today, Feb 22, @NJDEPForestFire plans to conduct prescribed burning operations in Burlington, Monmouth & Ocean counties. 🔥 Active / upcoming prescribed burn map: njparksandforests.org/fire/i…… 🔗 More info about prescribed burning: nj.gov/dep/newsrel/2024/24_0…
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Stephen Leonard retweeted
Complete hardware + software setup for running Deepseek-R1 locally. The actual model, no distillations, and Q8 quantization for full quality. Total cost, $6,000. All download and part links below:
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🧪$1 MILESTONE—For the first time ever, a rapid COVID test is now as low as $1 in the United States. Get it before Christmas & New Year’s holiday gatherings ASAP. Use discount code “BF24”. Not a referral link. (No profit or commission). store.pharmalynk.com/product…
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Given that the COVID numbers are on the rise, I thought I’d it useful to share some our research team’s work looking at the interplay between CO2, aerosol, SARS-CoV-2, and airborne transmission. 🧵
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A teacher friend maintains a CO2 reading in the low-500s in a classroom full of primary school children, using open windows. Also bought 2 HEPA filters out of their own money. 4 years of teaching like that, never infected. /1
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⚠️STAGGERING—24.4% of Americans ages 18 and over who have received a positive #COVID19 test or diagnosis have experienced symptoms of #LongCovid that persisted for 3 months or longer. Long COVID generally worse/more frequent with more severe COVID survivors. Thus…. Worst states for % (of positive) experiencing Long Covid… notice any pattern? 1. Oklahoma - 34% - 1 in 3 infected people! 2. Montana 3. Alabama 4. Arkansas 5. North Dakota 6. Ohio 7. Wyoming 8. South Dakota 9. West Virginia 10. Indiana 11. Kentucky 12. Florida 13. Arizona 14. Nebraska 15. Mississippi Graph @michael_hoerger. Table source: US Census Bureau. helpadvisor.com/community-he…
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I went to restaurants again. I traveled across the country. I went to indoor weddings. I'm slightly ashamed to admit this but I actually argued with one of my coworkers about masks back then. "Look at this NYT article," I said. "Breakthrough infections are rare!" How wrong I was.
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Lots of people getting sick after holiday gatherings, and definitely seeing more cases in the ER this week, which is usually our busiest time of year. A quick guide on how to manage some of the more common symptoms, and when it is advisable to get checked out: What to do about coughs? Coughs are probably the most annoying part of getting sick. Coughing is a natural reflex to help you clear secretions and phlegm while you're sick. It can annoyingly linger for 3-6 weeks afterwards as a 'post-viral cough produced by throat and lung irritation, and keep you from sleeping and working. What can you do about it? Honey: This can be soothing for the throat, has an antimicrobial effect, and may help reduce coughing. You can take it with a spoon, or with tea or warm water. Combining it with ginger can also help. Hydration: Helps thin secretions, making them easier to cough up Antihistamines: Commonly used for allergy symptoms, they can help for runny noses and sneezing. Use the non-sedating second generation ones (Cetirizine, Loratidine) if you do opt for this. Cough Suppressants and Expectorants: Over-the-counter cough medicines can help. Cough suppressants (like dextromethorphan) reduce the cough reflex, and expectorants (like guaifenesin) help loosen mucus. Lozenges: Throat lozenges or hard candies can help keep the throat moist and reduce coughing. Make sure you don't fall asleep with them in your mouth, to reduce choking risk, as I almost learned the hard way! Steam Humidifiers: Inhaling steam or using a humidifier adds moisture to the air, which can soothe irritated airways and reduce coughing. Asthma inhalers: May be beneficial if you have a history of asthma. Avoiding Certain Activities: those that exacerbate the cough, like vigorous exercise or exposure to cold air, should be avoided. Children: For safety reasons, most cold/flu meds (eg pseudoephedrine, benadryl) are not recommended or approved for kids <6. Reactine (cetirizine) is approved in Canada for children >2 for allergy symptoms. A dry cough with no phlegm, fever, no body aches, no chest pain, no shortness of breath, is harmless in most cases and will resolve after a few weeks. If you have any of these symptoms, or it lasts beyond 6 weeks, get it checked out. What do I do about body aches? Use tylenol (paracetamol) and advil (ibuprofen) for these symptoms. Follow the guidelines listed on the bottle to avoid taking too much. Stay well hydrated as well. What about fever? Meds: High fevers will make you feel miserable, and the effect is especially pronounced in children. Keep ahead of it with Tylenol/Paracetamol and Advil/Ibuprofen What about my appetite? Fluid intake: Appetite loss is normal in most flu-like infections. It's normal for kids to refuse solid food when sick with a fever, but they should still be able to drink fluids; give lots of fluids/electrolytes, especially after you bring down the fever. The appetite will usually recover after a day or two with the more benign viruses. If you stop peeing, or are peeing much less than normal, it's a sign that you are not getting enough fluids. Meds: Some viruses, C19 and Flu included, can cause severe nausea, vomiting and diarrhea. It can be challenging to stay hydrated. Anti-nausea medications like Gravol (dimenhydrinate) can help, as well as Ondansetron (Zofran) which usually requires a prescription. It's fairly routine for us to give IV fluids in the ER to patients with severe flu and C19-like illnesses and that's often enough to help them get over a rough patch of illness, so don't feel bad if you have to come in. When to come to see your physician/come to the hospital(not an exhaustive list) - fever more than 4-5 days - not eating/drinking - lethargic/sleepy even with tylenol/advil - not peeing, or peeing too much - rapid or noisy breathing - Any fever in a child <6 weeks, or in a chemo patient - focal source of possible bacterial infection - ear pain (ear infection), severe sore throat (strep), pain on urination/flank pain (UTI/kidney infection), etc. - confusion, forgetfulness, not able to walk (in the elderly) - if you're worried Plan ahead if you have to go to hospital Wait times can be higher during the holiday season, our busiest time of year. Taken from an article by my colleague Dr. Courtney Spelliscy (link in thread) Bring food, you will get hungry. Hospital cafeterias may not be fully stocked or open during the holidays Bring devices, you will get bored. Bring powerbanks, chargers as well. Bring some essentials, change of clothes, toothbrush, ear plugs, etc. Get organized, bring a list of medications, any paperwork on previous conditions, tests, etc. Be kind, the hospital is a chaotic environment and we try our best. What to do when you recover from C19 Avoid strenuous exercise, until the fatigue and brain fog have fully resolved. There is some suspicion that this could prolong the length of time you'll have these symptoms, through whatever unknown mechanism causes long term symptoms. Look out for secondary infections: it is very common for recovering patients to get bacterial infections (pneumonia, kidney infections, strep, invasive strep) and reactivation of viral infections (shingles, mono). If you are feeling much worse 1-2 months post infection, there probably is a good reason, and get checked out. Look out for blood clots: very common to get DVTs, strokes and heart attacks (mostly in older folks) after an infection. If your leg is swelling and more painful than usual, pay close attention. If you're having some palpitations, chest pain or shortness of breath that's getting worse, don't ignore it. Common Sense Things: Do a Rapid Test - When you get symptoms, it is a big help to your physicians to know if you're C19 positive or not. This could mean faster access to antivirals that could save a vulnerable patient's life, or at least prevent a hospitalization. Many studies showing early use of Paxlovid and Remdesivir can reduce the progression to hospital admission. Metformin may help for preventing Long C19. Knowing if you have it could also mean you're not prescribed unnecessary and possibly harmful antibiotics. It also helps you keep vulnerable babies or older relatives away from infected family members. Prevention - Mask wearing is not popular, but smart, especially when used in poorly ventilated, crowded places (planes, trains, buses, hospitals, malls full of holiday shoppers). This is a high yield activity that might spare you a lot of misery If you're sick, stay home! If you're sick with any cold symptoms, stay home, wear a mask if you absolutely need to go out. Spare someone else a lot of misery. - It's a hard thing to ask, but don't go to the big family dinner and infect everyone if you're sick - It's no longer 'brave' or a sign of a hard worker to show up sick to work. It's a terrible winter present that your colleagues will hate you for. Get boosted (for C19, flu, and RSV if available), when you're feeling better (and when guidelines say you can). Will hopefully prevent some infections in future and ensure a milder course of illness for most.
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Stephen Leonard retweeted
I'd been wanting to do this for ages but had to wait for a window of dry weather... Finally, at the end of the winter term, I stood outside my primary school at pick-up time. I had two DIY air filters behind me, some information on a flyer and a determination to chat. 🧵
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I thought we had a simple, easy bill. It was bipartisan. It cost nothing. Pro-veteran. Pro-family. Aaand here’s what it actually took:
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If you’re looking for an affordable indoor air quality monitor, the AirGradient ONE is a monitor you should consider! It’s open-source, has user-replaceable parts, and is affordable! breathesafeair.com/airgradie…
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Another round of mini painting in the books. Lots of fine details on these bad boys
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Van Eck phreaking... It ACTUALLY works?!?!
Introducing deep-TEMPEST: a deep learning method that recovers great quality images from unintentional electromagnetic emanations of HDMI. Great work (in progress) by E. Martinez, S. Fernandez and G. Varela 💪💪 (co-mentored with @muse_pablo). Expect more news in the next weeks.
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So pleased to report that our Mount Sinai-Yale long COVID (MY-LC) paper with @putrinolab & others is now published!! Proud of the hard work of all who contributed. We found biological signatures that can distinguish people with vs. without #longCOVID (1/) nature.com/articles/s41586-0…
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FAQ: Is WHO not naming COVID variants anymore? Why is every new variant another "Omicron subvariant"? Earlier today, when we posted about BA.2.86, we noticed that several people dismissed the new variant simply because it's another descendant of Omicron. We've had Omicron for nearly 2 years, so what's new? In this post, we'll address this common misconception and explain in more detail why it's been such a long time since a COVID variant was given a Greek letter. First, let's look at the list of COVID variants so far: 1. Alpha (December 2020) 2. Beta (December 2020) 3. Gamma (January 2021) 4. Delta (April 2021) 5. Epsilon (March 2021) 6. Zeta (March 2021) 7. Eta (March 2021) 8. Theta (March 2021) 9. Iota (March 2021) 10. Kappa (April 2021) 11. Lambda (June 2021) 12. Mu (August 2021) 13. Omicron (November 2021) The Greek alphabet has 24 letters and 2 of them ("Nu" and "Xi") were skipped. Viruses evolve constantly. And so, with many insignificant variants popping up, WHO was quickly running out of Greek letters and stopped giving out new names. Earlier this year, WHO quietly updated its guidelines and clarified that, going forward, only variants of concern (VOCs) will be given a Greek letter. All other variants use scientific nomenclature systems (XBB.1.5, BA.2.86, etc). Virtually all COVID cases in the world are caused by descendants of Omicron, so new variants - no matter how many mutations they have - are also descendants of Omicron (just like Omicron and other variants are also descendants of the original strain). Under the new guidelines, it doesn't matter how many mutations the virus has, or how far removed it is from its ancestor. To qualify as a variant of concern (and be assigned a Greek letter), a new variant must meet at least one of the following criteria: 1. A detrimental change in clinical disease severity 2. A change in epidemiology causing substantial impact on health systems and therefore require major public health interventions. OR; 3. A significant decrease in vaccine efficacy against severe disease. Conclusion: Under the old naming system, BA.2.86 would have been given a Greek letter. but we would have run out of Greek letters a long time ago. BA.2.86 has more than 30 mutations in the spike protein, setting it apart from most other subvariants. Will BA.2.86 qualify as a VOC and get a Greek letter? It's too early to say, it's been only a few days since the first case was found, but the criteria is very limited, which makes it less likely. If it does happen, it would likely take weeks before enough data is available to make such a determination. The next available name is Pi.
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Would reporters *please* stop saying RICO law in Georgia is intended to be applied to organized crime. That is *false.* In fact, it is wrong on so many levels that it is shocking reporters keep saying it. They are clearly referring to federal RICO - where they are also wrong.../1
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CLEAN AIR IN *ALL* CLASSROOMS 🌎: This morning ☀️ I was so excited to address teachers at Aptos middle school (6-8) in SF about 160 DIY air purifiers. Congrats 👏to parents who built, installed 3 of them in ALL CLASSROOMS in summer. Below my notes, Q&A from morning talk. (1/23)
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The profound toll COVID-19 has had on heart health is only now starting to emerge. Doctors are grappling with how to help. “We are seeing effects on the heart and the vascular system that really outnumber, unfortunately, effects on other organ systems.” apnews.com/article/covid19-l…
Readers added context they thought people might want to know
The statement “only now” is misleading as the damage that SARS-CoV-2 does to the cardiovascular system has been heavily documented since as early as 2020, e.g. bmccardiovascdisord.biomedcentral.com/articles/10.11… This Nature Medicine article quotes in Feb 2022 “The cardiovascular complications of…COVID-19…are well described” nature.com/articles/s4159…
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I've worked with superconductors for the better part of a decade now in different contexts, from STM condensed matter labs, to particle accelerators, and now fusion. Time for a deep dive on what exactly this miracle-technology unlocks for us a species: 🧵
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#Cybersecurity take note - when paramedics arrive at an accident scene they do not run around frantically or in a panic. Paramedics deliberately, and stoically execute the procedures that they've learned to gain access, assess the scene, triage, & help effectively
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