Fri, 00:10: RT @PalmerReport: Ted Cruz is already retracting his admission that January 6th was a terrorist attack, and now he’s on tv begging Tucker C…
Fri, 00:12: RT @RideSacRT: COVID-19 cases reaching record highs and a national workforce shortage is having a tremendous impact on SacRT operations and…
Fri, 00:12: RT @RideSacRT: We recognize the impact that just one cancellation has on SacRT customers. Please know that we are actively working to maint…
Fri, 00:12: RT @UFCW8: US meat plants relaxed #COVID19 safety protocols after outbreaks: #unions Smithfield Foods, last year assigned a team of employ…
Fri, 00:12: RT @RideSacRT: Join SacRT's GM/CEO, Henry Li, for our Transit Talk Online Chat on Friday, January 7, 2022, from noon to 1 p.m. You can subm…
Fri, 00:13: RT @mon_lovesyou: 22000+ people are held in ICE jails right now under Biden. That’s 7000 more people than were held under Trump. What happe…
Fri, 00:13: RT @lara_korte: Health Committee Chair @JimWoodAD2 says he will vote to move Ash Kalra's single-payer bill forward when it's heard in commi…
Fri, 00:13: RT @alex_lee: It begins! #AB1400 CalCare to create universal healthcare was just voted to be referred to Assembly Health Committee
Fri, 00:13: RT @alex_lee: Always in awe of our lead author @Ash_Kalra (our progressive caucus chair too) pushing this transformative legislation forwar…
Fri, 00:13: RT @MLS_Dave: Omicron, days 5/6, no better. Me: razor blade sore throat, fatigue, body aches, chills, night sweats. Wife: fever >102° off…
Fri, 00:13: RT @cerisecastle: New from me: LA County Sheriff candidate Cecil Rhambo shot 3 people in 3 years: his supervisor, a colleague, and an unide…
Fri, 00:13: RT @jljcolorado: 1/ SUPERSPREADING IS EXPLAINED BY SHARED-ROOM AIRBORNE TRANSMISSION We can use that to estimate risk of transmission for…
Fri, 00:13: RT @jljcolorado: 2/ Some background first, for people who may not have seen this before: We have known for a long time that airborne trans…
Fri, 00:13: RT @jljcolorado: 3/ The fact that airborne transmission is important is widely accepted in the scientific community [except for some reca…
Fri, 00:14: RT @jljcolorado: 4/ There are 3 general situations for airborne transmission: a) close proximity -- very dangerous, can inhale a lot of ex…
Fri, 00:14: RT @jljcolorado: 5/ (cont. of situations for airborne transmission) c) longer-range transmission: transmission when not in the same room…
Fri, 00:14: RT @jljcolorado: 6/ The paper focuses on situation (b), shared room transmission Before explaining it, few things about (a) & (c): (a) cl…
Fri, 00:14: RT @jljcolorado: 7/ Situation (c) "longer-range transmission", when not in the same room, is possible and there are many reported cases for…
Fri, 00:14: RT @jljcolorado: 8/ Another case of (c) longer-range transmission beyond a shared room. This time in quarantine hotel in Hong Kong. [Very…
Fri, 00:14: RT @jljcolorado: 9/ Another case of (c) longer-range transmission beyond a shared room: transmission through air connections in an apartmen…
Fri, 00:14: RT @jljcolorado: 10/ DILUTION is key: (a) close proximity: LOW dilution, lots of transmission (b) shared room: LOW dilution IF low ventil…
Fri, 00:14: RT @jljcolorado: 11/ Back to the paper: many SUPERSPREADING events for COVID, one person infects many, always SHARING A ROOM (case b) We k…
Fri, 00:14: RT @jljcolorado: 12/ Some people argue that contact tracing data shows that (a) close proximity dominates and (b) shared-room air is not ve…
Fri, 00:14: RT @jljcolorado: 13/ What we do in the paper is to investigate superspreading events from the literature, and see if the fit airborne trans…
Fri, 00:14: RT @jljcolorado: 15/ We analyze these outbreaks together, with a model of airborne transmission in a shared room. Based on the Wells-Riley…
Fri, 00:14: RT @jljcolorado: 16/ Here is a schematic of the model: Step 1) Infected person exhales virus (E in drawing). Low amount if breathing, more…
Fri, 00:14: RT @jljcolorado: 17/ Step 2) Virus-laden aerosols mix in the room air (We are NOT considering close-proximity transmission, since it can't…
Fri, 00:14: RT @jljcolorado: 18/ Step 3) Virus in the air can: - go outside w/ ventilation (F_out, speed of ventilation varies hugely across locations…
Fri, 00:14: RT @jljcolorado: 19/ A level of airborne virus is established in the room. Depends on: - how much virus is being exhaled - how big the ro…
Fri, 00:14: RT @jljcolorado: 20/ For those interested in more details and more references, the model is freely-available in spreadsheet format at https…
Fri, 00:14: RT @jljcolorado: 21/ Multiple very similar models have been published (I'll add a list at the end), they all do the same thing. But one co…
Fri, 00:14: RT @jljcolorado: 22/ This paper makes 2 advances: the first is that we condensed ALL the factors that affect infection into a single number…
Fri, 00:14: RT @jljcolorado: 24/ - D: duration of the event - V: volume of the room - lamba_0: ventilation rate - lambda_cle: air cleaning (e.g. HEP…
Fri, 00:14: RT @jljcolorado: 25/ The model predicts that the attack rate (fraction of people present that were infected) should depend on Hr only, for…
Fri, 00:14: RT @jljcolorado: 26/ Agreement is not perfect, but these are outbreaks taken from the literature, with imperfect data about activities etc.…
Fri, 00:14: RT @jljcolorado: @ZheP_AtmChem 27/ Now, if these superspreading events were caused by e.g. surface transmission, or something else than air…
Fri, 00:15: RT @jljcolorado: @ZheP_AtmChem 28/ Why don't we have more events? This is a SORE point. Bc most investigations done by epidemiologists wh…
Fri, 00:15: RT @jljcolorado: 29/ Now, as Kurt Lewin said, "there is nothing more practical than a good theory". Once the model works, we can use it to:…
Fri, 00:15: RT @jljcolorado: 30/ For example, in this table we estimate the risk of transmission of different situations, for the omicron variant with…
Fri, 00:15: RT @jljcolorado: 31/ The table shows the probability of infection for an individual that participates in an event. - There may or may NOT…
Fri, 00:15: RT @jljcolorado: 32/ The rest of the factors are the ones that we have discussed already: - low vs high occupancy (more people, more chang…
Fri, 00:15: RT @jljcolorado: 33/ - Wearing masks or not (masks remove exhaled virus and prevent inhalation of virus from the air) - Vocalization: much…
Fri, 00:15: RT @jljcolorado: 34/ This table updates a similar, but QUALITATIVE table published by @trishgreenhalgh, Lydia Bourouiba, and colleagues in…
Fri, 00:15: RT @jljcolorado: 35/ Another application of the model is to evaluate the impact of mitigation measures. I.e. we are told to spend less tim…
Fri, 00:15: RT @jljcolorado: 36/ For example here we start with a high risk situation By using N95 masks (with attention to fit), halving the duratio…
Fri, 00:15: RT @jljcolorado: 37/ In the paper we show similar mitigations for a range of locations, that comply with recent ASHRAE (@ashraenews) guidel…
Fri, 00:15: RT @jljcolorado: 38/ For example: - A lot harder to make choir safe: a lot of virus emission by singing, more breathing - Much easier to…
Fri, 00:15: RT @jljcolorado: 39/ Finally, the model allows comparison of different airborne diseases: - Pulmonary tuberculosis is ONLY airborne - Mea…
Fri, 00:15: RT @jljcolorado: 40/ COVID-19 has intermediate transmissibility between tuberculosis and measles Both are airborne. Which is why the old a…
Fri, 00:15: RT @jljcolorado: 41/ We couldn't find many outbreaks in the literature for other diseases that DID have ventilation rate, room volume, and…
Fri, 00:15: RT @jljcolorado: 42/ The flu outbreak is the famous case in an airplane that was parked in a tarmac for 3 hours without ventilation, with s…
Fri, 00:15: RT @jljcolorado: 43/ IMPORTANT: all of the outbreaks included in the paper are from early in the pandemic (it takes time to do the analysis…
Fri, 00:15: RT @jljcolorado: 44/ We can estimate the impact of the omicron variant, from recent reports of its increased transmissibility. Uncertain, c…
Fri, 00:15: RT @jljcolorado: 45/ So I think that's all I wanted to say. Thank you if you made it to here. For more info on the overall airborne transmi…
Fri, 00:15: RT @jljcolorado: 46/ If you mostly care about what you can do to protect yourself (hopefully it makes a little more sense now after reading…
Fri, 00:15: RT @jljcolorado: 47/ Finally I have to thank many people without whose hard work, input, and feedback this work wouldn't have been possible…
Fri, 00:16: RT @jljcolorado: 48/ I kept working on it, but as they say in my native Spain, I was "slower than the horse of the bad guy" in a Western mo…
Fri, 00:16: RT @jljcolorado: 49/ Many other scientists also participated (and were very patient with me), most from Lidia Morawska's "group of 36" that…
Fri, 00:16: RT @jljcolorado: 50/ (authors continued) ... @Marcel_Loomans Giorgio Buonanno, Lidia Morawska, Stephanie Dancer, Yuguo Li, Bill Nazaroff,…
Fri, 00:16: RT @jljcolorado: 51/ As I said earlier we twisted the arms of @trishgreenhalgh and Lydia Bourouiba to join us to develop a quantitative ver…
Fri, 00:16: RT @jljcolorado: 54/ That's it for now. (I still need to add links for other estimators, but fam. waiting for me to finish to have dinner,…
Fri, 00:16: RT @AlysonMetzger: "The Los Angeles County Fire Department is driving patients to hospitals in fire trucks rather than ambulances because 4…
Fri, 00:16: RT @AlysonMetzger: “The rapid spread of omicron has wiped out our workforce,” McCormick Ambulance, a private company that contracts with th…
Fri, 00:16: RT @AlysonMetzger: This is so dangerously off the rails, I can't even express it.
Fri, 00:16: RT @sara_kahanamoku: Welcome to my hometown in Hawaiʻi, where the cheapest wheat bread is over $8 and milk is $7 a gallon. We have 2 grocer…
Fri, 00:17: RT @CAgovernor: Omicron has grown faster than any variant we've seen in California: - On December 1, the first known case was detected - By…
Fri, 00:17: RT @POTUS: Last year, for the first time in our history, a president who just lost an election tried to prevent the peaceful transfer of po…
Fri, 00:18: RT @James_HamNBA: NBA L2M report makes everything better. Admits crucial mistake in the closing moments of last night's Kings/Hawks game. h…
Fri, 00:19: RT @NBCSGiants: As Joey Bart takes over behind the plate, @PavlovicNBCS breaks down what the Giants should expect from the young catcher ne…
Fri, 00:19: RT @LorenaSGonzalez: I spent close to a decade in a job with zero retirement (no pension or 401k) during my 40’s when I needed to be invest…
Fri, 00:20: RT @LorenaSGonzalez: That being said, I had amazing healthcare benefits. Benefits that literally saved my life. All Californians deserve h…
Fri, 00:20: RT @CaliforniaLabor: Turning a state as large & diverse as California pro-worker doesn’t happen by chance or overnight. It takes a MOVEMENT…
Fri, 00:20: RT @nathanfletcher: 🤦🏻♂️oh KUSI…it is pretty simple: -wear a mask to avoid getting COVID -crack down on corporate polluters to keep out a…
Fri, 00:20: RT @latimes: "It really dawned upon me that things seemed more serious than they appeared when the mob pushed forward, going around the lin…
Fri, 00:21: RT @Caltrain: Do you remember when you joined Twitter? We do! Thank you for sticking with us for 10 years! That’s 10 years of information…
Fri, 00:21: RT @AirDistrict: #CleanCarsforAll is accepting applications for income-qualified residents in areas impacted by higher levels of air pollut…
Fri, 00:21: RT @Oakland: As part of its innovative Universal Basic Mobility pilot, OakDOT announced today that it has distributed 500 prepaid debit car…
Fri, 00:21: RT @Caltrain: Good morning everyone, if you are interested in joining our first Board of Directors meeting of the year it will begin at 9:0…
Fri, 00:21: RT @Caltrain: The Caltrain meeting has begun, with a quorum. Today's meeting will be adjourned in honor of former SamTrans employee, and fa…
Fri, 00:21: RT @Caltrain: Item 3: A motion to extend emergency measures for remote meetings due to COVID. Passes. Item 4: Closed Session for legal disc…
Fri, 00:21: RT @Caltrain: The Caltrain board meeting is 10 mins delayed due to legal counsel. Expected to resume at 9:35. #Caltrain
Fri, 00:21: RT @Caltrain: The Meeting has Resumed: Item 5: Report of Gen Counsel No actions to report. Item 6: Public comment for items not on agenda…
Fri, 00:21: RT @Caltrain: Deep conversation about governance and how Caltrain is managed between the three counties it serves. Currently Caltrain is ma…
Fri, 00:21: RT @Caltrain: Dir @DevDavisCA has proposed that after $19.8m is repaid to SamTrans that the railroad be turned over to the Caltrain board (…
Fri, 00:21: RT @Caltrain: @CStoneBmont counter motion: similar to Pine's. Davis rejects that as well. 5 no, 4 yes votes. Motion fails. New motion by Da…
Fri, 00:21: RT @Caltrain: Motion states that upon repayment of $19.8M to SamTrans, it would handover rights to railroad, basically. Heminger throws…
Fri, 00:21: RT @Caltrain: "We can keep restating agreements til the cows come home... but should move on to something new" Dir. Heminger. We are now t…
Fri, 00:21: RT @Caltrain: The overall motion passes. Now going back to SamTrans as managing agency discussion. @SupCindyChavez asks for a clarification…
Fri, 00:21: RT @Caltrain: Result is that the JPB could hire/fire ED & JPB-appointed Caltrain Executive Director would be able to hire/fire some employe…
Fri, 00:21: RT @Caltrain: @CStoneBmont says this seems to be more about changing the role of the governing agency than about governance. Says proposal…
Fri, 00:21: RT @Caltrain: @CStoneBmont says basically SamTrans purchased various contracts/agreements back in the day. Among them was the right to hire…
Fri, 00:21: RT @Caltrain: @SupCindyChavez says she's never sat on a board where it couldn't hire/fire the ED. Says should take a look at financial rela…
Fri, 00:21: RT @Caltrain: @CStoneBmont frames his POV; SamTrans giving up rights for nothing is not gonna fly for SMC voters or SamTrans board. Says p…
Fri, 00:21: RT @Caltrain: @jeffgeerwc says they were "firmly spoken" to by others in SMC asking "What the heck are you doing giving so much away?" He…
Fri, 00:22: RT @Caltrain: Heminger discusses RR revenue and relates it to the constituents of the counties (70+% of funds generated outside SMC). Also…
Fri, 00:22: RT @Caltrain: Heminger says SamTrans should get paid back. @shamannwalton appreciates Stone's concerns for SMC. Has concerns for SF, too;…
Fri, 00:22: RT @Caltrain: Counsel: Ultimately SamTrans has to agree. Otherwise it's a non-agreement, regardless of all the JPB @shamannwalton highlig…
Fri, 00:22: RT @Caltrain: @DevDavisCA summarizes, the old agreement is no longer tenable due to changes "on the ground," including RR. Differences are…
Fri, 00:22: RT @frankgore: Don’t sleep on my 49ers‼️Definitely playing their best ball and are very hungry💯📈🔥🚀🦾🏉🙏🏿 #WATCH
Fri, 00:22: RT @TMZ: 49ers running back Raheem Mostert's 3-year-old son was rushed to the hospital after experiencing severe COVID-19 symptoms -- inclu…
Fri, 00:22: RT @RapSheet: From @GMFB: The latest on #49ers QB Jimmy Garoppolo and #Titans RB Derrick Henry, both of whom practiced on Wednesday. https:…
Fri, 00:22: RT @jenniferleechan: For the third day in a row, Jimmy Garoppolo threw a football. A lot of them actually. He looked accurate in #49ers ind…
